jdk/src/linux/doc/man/ja/jstat.1
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'\" t
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.\"
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.\" Copyright 2004-2006 Sun Microsystems, Inc.  All Rights Reserved.
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.\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.\"
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.\" This code is free software; you can redistribute it and/or modify it
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.\" under the terms of the GNU General Public License version 2 only, as
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.\" published by the Free Software Foundation.
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.\"
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.\" This code is distributed in the hope that it will be useful, but WITHOUT
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.\" ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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.\" FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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.\" version 2 for more details (a copy is included in the LICENSE file that
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.\" accompanied this code).
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.\"
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.\" You should have received a copy of the GNU General Public License version
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.\" 2 along with this work; if not, write to the Free Software Foundation,
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.\" Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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.\"
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.\" Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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.\" CA 95054 USA or visit www.sun.com if you need additional information or
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.\" have any questions.
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.\" 
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.\" 
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.TH jstat 1 "2006 年 9 月 4 日" "Java SE 6" "ユーザーコマンド"
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.SH 名前
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jstat \- Java 仮想マシン統計監視ツール
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.\"
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.SH 形式
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.nf
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\f3jstat\fP [ \f2generalOption\fP | \f2outputOptions\fP\f2vmid\fP [\f2interval\fP[s|ms] [\f2count\fP]] ]
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.fl
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.fi
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.SH パラメータ
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.I generalOption
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単一の汎用コマンド行オプション (
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.B \-help
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.B \-options
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、または 
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.B \-version
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) 
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.if t .TP 20
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.if n .TP 15
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.I outputOptions
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1 つ以上の出力オプション。1 つの statOption と 
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.B \-t
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.B \-h
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、および 
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.B \-J 
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オプションのいずれかで構成されます。
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.if t .TP 20
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.if n .TP 15
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.I vmid
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仮想マシン識別子。ターゲットの Java 仮想マシン (JVM) を示す文字列。一般的な構文は、次のとおりです。
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.LP
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.RS
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.ft 3
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.nf
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[\fP\f4protocol\fP\f3:][//]\fP\f4lvmid\fP[@\f2hostname\fP[:\f2port\fP]/\f2servername\fP]
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.fi
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.ft 1
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.RE
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.LP
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vmid 文字列の構文は、URI の構文とほぼ同じです。vmid は、ローカル JVM を表す単純な整数から、通信プロトコル、ポート番号、およびその他の実装固有の値を指定する複雑な構造までさまざまです。詳しくは、以下の「仮想マシン識別子」を参照してください。
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.if t .TP 20
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.I interval[s|ms]
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指定された単位 (秒 (s) またはミリ秒 (ms) ) でのサンプリング間隔。デフォルトの単位はミリ秒です。正の整数でなければなりません。これが指定された場合、
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.B jstat 
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.I interval 
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ごとに出力を生成します。
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.if t .TP 20
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.if n .TP 15
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.I count
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表示するサンプル数。デフォルトの値は infinity です。つまり、
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.B jstat 
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はターゲット JVM が終了するか 
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.B jstat 
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コマンドが終了されるまで統計を表示します。正の整数でなければなりません。
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.SH 機能説明
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.B jstat 
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ツールは、計測機構付き HotSpot Java 仮想マシン (JVM) のパフォーマンス統計を表示します。ターゲット JVM は、仮想マシン識別子、すなわち、以下の 
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.I vmid 
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オプションによって識別されます。
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.LP
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注 - このユーティリティはサポートされていないため、JDK の将来のバージョンでは使用できない可能性があります。現時点では、Windows 98 および Windows ME プラットフォームでは使用できません。
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.SS 仮想マシン識別子
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vmid 文字列の構文は、URI の構文とほぼ同じです。
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.LP
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.RS
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.ft 3
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.nf
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[protocol:][//]lvmid[@hostname][:port][/servername]
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.fi
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.ft 1
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.RE
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.if t .TP 20
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.if n .TP 15
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.I protocol
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通信プロトコル。
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.I protocol 
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が省かれ、
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.I hostname 
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が指定されなかった場合、デフォルトのプロトコルは、プラットフォームに固有の最適化されたローカルプロトコルです。
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.I protocol 
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が省かれ、
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.I hostname 
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が指定された場合、デフォルトのプロトコルは rmi です。
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.if t .TP 20
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.if n .TP 15
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.I lvmid
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ターゲット JVM のローカル仮想マシン識別子。
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.I lvmid 
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は、プラットフォーム固有の値であり、システム上の JVM を一意に識別します。
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.I lvmid 
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は、仮想マシン識別子の唯一の必須コンポーネントです。
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.I lvmid 
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は、一般に、ターゲット JVM プロセスのオペレーティングシステムのプロセス識別子ですが、必ずしもそうとは限りません。
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.B jps 
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コマンドを使用して、
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.I lvmid 
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を調べることができます。また、UNIX プラットフォームでは 
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.B ps 
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コマンドで、Windows ではタスクマネージャで 
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.I lvmid 
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を調べることができます。
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.if t .TP 20
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.if n .TP 15
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.I hostname
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ターゲットホストを示すホスト名または IP アドレス。
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.I hostname 
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が省かれた場合、ターゲットホストはローカルホストです。
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.if t .TP 20
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.B port
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リモートサーバと通信するためのデフォルトポート。
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.I hostname 
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が省かれるか、
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.I protocol 
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が最適化されたローカルプロトコルを指定している場合、
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.B port 
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は無視されます。そうでない場合、
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.B port 
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パラメータの扱いは、実装に固有です。デフォルトの rmi プロトコルの場合、
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.B port 
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はリモートホスト上の 
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.B rmiregistry 
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のポート番号を示します。
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.B port 
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が省かれ、
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.I protocol 
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が rmi を示す場合は、デフォルトの rmiregistry ポート (1099) が使用されます。
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.if t .TP 20
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.if n .TP 15
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.I servername
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このパラメータの取り扱いは、実装によって異なります。最適化されたローカルプロトコルの場合、このフィールドは無視されます。rmi プロトコルの場合、このパラメータは、リモートホスト上の RMI リモートオブジェクトの名前を表します。
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.SH オプション
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.B jstat 
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コマンドは、汎用オプションと出力オプションの 2 種類のオプションをサポートしています。汎用オプションを指定すると、
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.B jstat 
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は簡単な使用法とバージョン情報を表示します。出力オプションによって、統計出力の内容と形式が決まります。
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.LP
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注 - すべてのオプションとそれらの機能は、将来のリリースで変更または削除されることがあります。
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.SS 汎用オプション
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汎用オプションの 1 つを指定した場合、他のオプションやパラメータを指定することはできません。
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.if t .TP 20
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.if n .TP 15
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.BI \-help
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ヘルプメッセージを表示します。
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.if t .TP 20
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.if n .TP 15
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.BI \-version
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バージョン情報を表示します。
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.if t .TP 20
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.if n .TP 15
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.BI \-options
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統計オプションのリストを表示します。次の「出力オプション」を参照してください。
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.SS 出力オプション
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汎用オプションを指定しなかった場合は、出力オプションを指定することができます。出力オプションは、
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.B jstat 
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の出力の内容と形式を決め、1 つの statOption と他のオプション (
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.B \-h
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.B \-t
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、および 
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.B \-J
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) のいずれかで構成されます。statOption は最初に指定する必要があります。
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.LP
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出力は、列が空白文字で区切られた表として書式化されます。タイトルの付いた見出し行が列の内容を表します。
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.B \-h 
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オプションを使用すると、見出しを表示する頻度を設定できます。列見出しの名前は、一般にオプション間で整合性が取れています。一般に、2 つのオプションで列の名前が同じになる場合、2 つの列のデータソースは同じです。
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.LP
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.B \-t 
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オプションを使用すると、出力の最初の列に Timestamp というラベルの付いたタイムスタンプ列が表示されます。Timestamp 列には、ターゲット JVM の起動からの経過時間が秒単位で表示されます。タイムスタンプの分解能は、さまざまな要因によって異なり、高負荷システムでは、遅延スレッドスケジューリングによって変動が生じることがあります。
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.LP
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.I interval 
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および 
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.I count 
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パラメータは、それぞれ 
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.B jstat 
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が出力を表示する頻度と回数を決めます。
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.LP
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注 - 将来のリリースで形式が変更される可能性があるので、
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.B jstat 
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の出力を解析するスクリプトは書かない方がよいでしょう。
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.B jstat 
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出力を解析するスクリプトを書く場合は、このツールの将来のリリースでは修正が必要になることを想定しておいてください。
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.if t .TP 20
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.if n .TP 15
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.BI \-statOption
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.B jstat が表示する統計情報を決めます。次の表に、使用可能なオプションを示します。\-options 汎用オプションを使用すると、特定のプラットフォームインストールでのオプションのリストが表示されます。
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.LP
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diff changeset
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.sp 1n
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parents:
diff changeset
   219
.TS
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parents:
diff changeset
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box;
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parents:
diff changeset
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cbp-1 | cbp-1
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l | l .
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オプション	表示される情報
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_
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class	クラスローダの動作に関する統計
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compiler	T{
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HotSpot Just-In-Time コンパイラの動作に関する統計
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T}	
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gc	T{
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ガベージコレクトされたヒープの動作に関する統計
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T}	
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gccapacity	世代の容量とそれらに対応する空間の統計
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gccause	T{
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ガベージコレクション統計の要約 ( \-gcutil と同じ) と、
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前回および現在 (該当する場合) のガベージコレクション
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イベントの原因
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T}	
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gcnew	新しい世代の動作の統計
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parents:
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   239
gcnewcapacity	新しい世代とそれらに対応する空間のサイズの統計
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gcold	T{
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古い永続的世代の動作の統計
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T}	
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gcoldcapacity	古い世代のサイズの統計
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parents:
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   244
gcpermcapacity	永続的世代のサイズの統計
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parents:
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   245
gcutil	ガベージコレクション統計の要約
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parents:
diff changeset
   246
printcompilation	ガベージコレクション統計の要約
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parents:
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   247
.TE
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parents:
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.if t .TP 20
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parents:
diff changeset
   249
.if n .TP 15
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parents:
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   250
.BI \-h " n"
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parents:
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   251
.I n 
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parents:
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個のサンプル (出力行 
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parents:
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.I n 
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parents:
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行) ごとに列見出しを表示します。
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parents:
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   255
.I n 
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は正の整数です。デフォルト値は 0 であり、データの最初の行の上に列見出しを表示します。
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.if t .TP 
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parents:
diff changeset
   258
.if n .TP 
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parents:
diff changeset
   259
.BI \-t " n"
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parents:
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出力の最初の列としてタイムスタンプ列を表示します。タイムスタンプは、ターゲット JVM が起動してからの時間です。
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parents:
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.if t .TP 
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parents:
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   262
.if n .TP 
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duke
parents:
diff changeset
   263
.BI \-J javaOption
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parents:
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   264
.I javaOption 
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parents:
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   265
を Java アプリケーション起動ツールに渡します。たとえば、
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parents:
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   266
.BI \-J \-Xms48m 
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parents:
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は、起動メモリを 48M バイトに設定します。オプションの完全なリストについては、以下のドキュメントを参照してください。
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parents:
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.RS 3
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parents:
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.TP 2
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parents:
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*
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parents:
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.na
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parents:
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   272
java \- Java アプリケーション起動ツール (Solaris) @
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parents:
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   273
.fi
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parents:
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   274
http://java.sun.com/javase/6/docs/technotes/tools/solaris/java.html
90ce3da70b43 Initial load
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parents:
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   275
.TP 2
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parents:
diff changeset
   276
*
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parents:
diff changeset
   277
.na
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duke
parents:
diff changeset
   278
java \- Java アプリケーション起動ツール(Linux) @
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parents:
diff changeset
   279
.fi
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parents:
diff changeset
   280
http://java.sun.com/javase/6/docs/technotes/tools/linux/java.html
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parents:
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   281
.TP 2
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parents:
diff changeset
   282
*
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parents:
diff changeset
   283
.na
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duke
parents:
diff changeset
   284
java \- Java アプリケーション起動ツール (Windows) @
90ce3da70b43 Initial load
duke
parents:
diff changeset
   285
.fi
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parents:
diff changeset
   286
http://java.sun.com/javase/6/docs/technotes/tools/windows/java.html
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parents:
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   287
.RE
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duke
parents:
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   288
.SS statOption と出力
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parents:
diff changeset
   289
次の表に、各 
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parents:
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   290
.I statOption 
90ce3da70b43 Initial load
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parents:
diff changeset
   291
に対して 
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duke
parents:
diff changeset
   292
.B jstat 
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parents:
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   293
が出力する列の要約を示します。
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duke
parents:
diff changeset
   294
.br
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duke
parents:
diff changeset
   295
.SS
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duke
parents:
diff changeset
   296
\-class オプション
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parents:
diff changeset
   297
.br
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duke
parents:
diff changeset
   298
クラスローダ統計
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duke
parents:
diff changeset
   299
.br
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duke
parents:
diff changeset
   300
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   301
.sp 1n
90ce3da70b43 Initial load
duke
parents:
diff changeset
   302
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   303
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   304
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   305
l | l .
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parents:
diff changeset
   306
列	説明
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parents:
diff changeset
   307
_
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parents:
diff changeset
   308
Loaded	ロードされたクラスの数
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parents:
diff changeset
   309
Bytes	ロードされた K バイト数
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parents:
diff changeset
   310
Unloaded	アンロードされたクラスの数
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duke
parents:
diff changeset
   311
Bytes	アンロードされた K バイト数
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parents:
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   312
Time	クラスのロードおよびアンロード操作の実行に要した時間
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parents:
diff changeset
   313
.TE
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duke
parents:
diff changeset
   314
.SS 
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duke
parents:
diff changeset
   315
\-compiler
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parents:
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   316
オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   317
.br
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duke
parents:
diff changeset
   318
HotSpot Just-In-Time コンパイラ統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   319
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   320
.sp 1n
90ce3da70b43 Initial load
duke
parents:
diff changeset
   321
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   322
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   323
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   324
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   325
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   326
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   327
Compiled	実行されたコンパイルタスクの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   328
Failed	失敗したコンパイルタスクの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   329
Invalid	無効化されたコンパイルタスクの数
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duke
parents:
diff changeset
   330
Time	コンパイルタスクの実行に要した時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   331
FailedType	前回失敗したコンパイルのコンパイルタイプ
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duke
parents:
diff changeset
   332
FailedMethod	前回失敗したコンパイルのクラス名とメソッド
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duke
parents:
diff changeset
   333
.TE
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duke
parents:
diff changeset
   334
.if \n-(b.=0 .nr c. \n(.c-\n(d.-29
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duke
parents:
diff changeset
   335
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   336
\-gc オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   337
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   338
ガベージコレクトされたヒープの統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   339
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   340
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   341
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   342
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   343
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   344
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   345
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   346
SOC	現在のサバイバースペース 0 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   347
S1C	現在のサバイバースペース 1 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   348
S0U	サバイバースペース 0 の使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   349
S1U	サバイバースペース 1 の使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   350
EC	現在のエデンスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   351
EU	エデンスペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   352
OC	現在のオールドスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   353
OU	オールドスペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   354
PC	現在の永続的スペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   355
PU	永続的スペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   356
YGC	若い世代の GC イベントの数
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duke
parents:
diff changeset
   357
YGCT	若い世代のガベージコレクション時間
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duke
parents:
diff changeset
   358
FGC	フル GC イベントの数
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duke
parents:
diff changeset
   359
FGCT	フルガベージコレクション時間
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duke
parents:
diff changeset
   360
GCT	ガベージコレクション合計時間
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duke
parents:
diff changeset
   361
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   362
.if \n-(b.=0 .nr c. \n(.c-\n(d.-63
90ce3da70b43 Initial load
duke
parents:
diff changeset
   363
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   364
\-gccapacity オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   365
.br
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duke
parents:
diff changeset
   366
メモリプール世代とスペース容量
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duke
parents:
diff changeset
   367
.br
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duke
parents:
diff changeset
   368
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   369
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   370
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   371
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   372
列	説明
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duke
parents:
diff changeset
   373
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   374
NGCMN	新世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   375
NGCMX	新世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   376
NGC	新世代の現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   377
S0C	現在のサバイバースペース 0 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   378
S1C	現在のサバイバースペース 1 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   379
EC	現在のエデンスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   380
OGCMN	旧世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   381
OGCMX	旧世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   382
OGC	旧世代の現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   383
OC	現在のオールドスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   384
PGCMN	永続的世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   385
PGCMX	永続的世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   386
PGC	永続的世代の現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   387
PC	永続的スペースの現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   388
YGC	若い世代の GC イベントの数。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   389
FGC	フル GC イベントの数。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   390
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   391
.if \n-(b.=0 .nr c. \n(.c-\n(d.-67
90ce3da70b43 Initial load
duke
parents:
diff changeset
   392
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   393
\-gccause
90ce3da70b43 Initial load
duke
parents:
diff changeset
   394
オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   395
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   396
このオプションは、\f3\-gcutil\fP オプションと同じガベージコレクション統計データの概要を表示しますが、最後のガベージコレクションイベントと (適用可能な場合は) 現在のガベージコレクションイベントの原因が含まれます。\f3\-gcutil\fP で一覧表示される列の他に、このオプションでは次の列が追加されます。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   397
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   398
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   399
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   400
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   401
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   402
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   403
LGCC	前回のガベージコレクションの原因
90ce3da70b43 Initial load
duke
parents:
diff changeset
   404
GCC	現在のガベージコレクションの原因
90ce3da70b43 Initial load
duke
parents:
diff changeset
   405
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   406
.if \n-(b.=0 .nr c. \n(.c-\n(d.-13
90ce3da70b43 Initial load
duke
parents:
diff changeset
   407
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   408
\-gcnew オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   409
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   410
新世代統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   411
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   412
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   413
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   414
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   415
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   416
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   417
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   418
SOC	現在のサバイバースペース 0 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   419
S1C	現在のサバイバースペース 1 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   420
S0U	サバイバースペース 0 の使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   421
S1U	サバイバースペース 1 の使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   422
TT	保有しきい値
90ce3da70b43 Initial load
duke
parents:
diff changeset
   423
MTT	最大保有しきい値
90ce3da70b43 Initial load
duke
parents:
diff changeset
   424
DSS	目標サバイバーサイズ (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   425
EC	現在のエデンスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   426
EU	エデンスペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   427
YGC	若い世代の GC イベントの数。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   428
YGCT	若い世代のガベージコレクション時間。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   429
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   430
.if \n-(b.=0 .nr c. \n(.c-\n(d.-47
90ce3da70b43 Initial load
duke
parents:
diff changeset
   431
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   432
\-gcnewcapacity オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   433
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   434
新世代のスペースサイズ統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   435
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   436
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   437
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   438
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   439
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   440
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   441
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   442
NGCMN	新世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   443
NGCMX	新世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   444
NGC	現在の新世代容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   445
S0CMX	サバイバースペース 0 の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   446
S0C	現在のサバイバースペース 0 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   447
S1CMX	サバイバースペース 1 の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   448
S1C	現在のサバイバースペース 1 の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   449
ECMX	エデンスペースの最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   450
EC	現在のエデンスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   451
YGC	若い世代の GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   452
FGC	フル GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   453
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   454
.if \n-(b.=0 .nr c. \n(.c-\n(d.-49
90ce3da70b43 Initial load
duke
parents:
diff changeset
   455
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   456
\-gcold オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   457
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   458
旧および永続世代統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   459
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   460
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   461
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   462
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   463
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   464
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   465
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   466
PC	現在の永続スペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   467
PU	永続スペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   468
OC	現在のオールドスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   469
OU	オールドスペースの使用量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   470
YGC	若い世代の GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   471
FGC	フル GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   472
FGCT	フルガベージコレクション時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   473
GCT	ガベージコレクション合計時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   474
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   475
.if \n-(b.=0 .nr c. \n(.c-\n(d.-35
90ce3da70b43 Initial load
duke
parents:
diff changeset
   476
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   477
\-gcoldcapacity オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   478
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   479
旧世代統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   480
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   481
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   482
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   483
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   484
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   485
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   486
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   487
OGCMN	旧世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   488
OGCMV	旧世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   489
OGC	旧世代の現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   490
OC	現在のオールドスペースの容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   491
YGC	若い世代の GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   492
FGC	フル GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   493
FGCT	フルガベージコレクション時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   494
GCT	ガベージコレクション合計時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   495
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   496
.if \n-(b.=0 .nr c. \n(.c-\n(d.-35
90ce3da70b43 Initial load
duke
parents:
diff changeset
   497
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   498
\-gcpermcapacity オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   499
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   500
永続世代統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   501
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   502
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   503
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   504
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   505
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   506
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   507
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   508
PGCMN	永続世代の最小容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   509
PGCMX	永続世代の最大容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   510
PGC	永続世代の現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   511
PC	永続スペースの現在の容量 (K バイト)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   512
YGC	若い世代の GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   513
FGC	フル GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   514
FGCT	フルガベージコレクション時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   515
GCT	ガベージコレクション合計時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   516
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   517
.if \n-(b.=0 .nr c. \n(.c-\n(d.-35
90ce3da70b43 Initial load
duke
parents:
diff changeset
   518
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   519
\-gcutil
90ce3da70b43 Initial load
duke
parents:
diff changeset
   520
オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   521
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   522
ガベージコレクション統計の要約
90ce3da70b43 Initial load
duke
parents:
diff changeset
   523
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   524
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   525
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   526
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   527
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   528
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   529
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   530
S0	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   531
サバイバースペース 0 の使用率 (スペースの現在の容量に対するパーセンテージ)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   532
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   533
S1	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   534
サバイバースペース 1 の使用率 (スペースの現在の容量に対するパーセンテージ)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   535
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   536
E	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   537
エデンスペースの使用率 (スペースの現在の容量に対するパーセンテージ)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   538
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   539
O	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   540
オールドスペースの使用率 (スペースの現在の容量に対するパーセンテージ)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   541
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   542
P	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   543
永続スペースの使用率 (スペースの現在の容量に対するパーセンテージ)
90ce3da70b43 Initial load
duke
parents:
diff changeset
   544
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   545
YGC	若い世代の GC イベントの数                              
90ce3da70b43 Initial load
duke
parents:
diff changeset
   546
YGCT	若い世代のガベージコレクション時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   547
FGC	フル GC イベントの数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   548
FGCT	フルガベージコレクション時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   549
GCT	ガベージコレクション合計時間
90ce3da70b43 Initial load
duke
parents:
diff changeset
   550
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   551
.if \n-(b.=0 .nr c. \n(.c-\n(d.-43
90ce3da70b43 Initial load
duke
parents:
diff changeset
   552
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   553
\-printcompilation オプション
90ce3da70b43 Initial load
duke
parents:
diff changeset
   554
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   555
HotSpot コンパイラメソッド統計
90ce3da70b43 Initial load
duke
parents:
diff changeset
   556
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   557
.TS
90ce3da70b43 Initial load
duke
parents:
diff changeset
   558
box;
90ce3da70b43 Initial load
duke
parents:
diff changeset
   559
cbp-1 | cbp-1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   560
l | l .
90ce3da70b43 Initial load
duke
parents:
diff changeset
   561
列	説明
90ce3da70b43 Initial load
duke
parents:
diff changeset
   562
_
90ce3da70b43 Initial load
duke
parents:
diff changeset
   563
Compiled	実行されたコンパイルタスクの数                      
90ce3da70b43 Initial load
duke
parents:
diff changeset
   564
Size	メソッドのバイトコードのバイト数
90ce3da70b43 Initial load
duke
parents:
diff changeset
   565
Type	コンパイルタイプ
90ce3da70b43 Initial load
duke
parents:
diff changeset
   566
Method	T{
90ce3da70b43 Initial load
duke
parents:
diff changeset
   567
コンパイルされたメソッドを識別するクラス名とメソッド名。クラス名では、名前空間セパレータとして "." の代わりに "/" を使用します。メソッド名は、指定されたクラス内のメソッドです。この 2 つのフィールドの形式は、
90ce3da70b43 Initial load
duke
parents:
diff changeset
   568
"HotSpot \- XX:+PrintComplation"
90ce3da70b43 Initial load
duke
parents:
diff changeset
   569
オプションと同じです。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   570
T}	
90ce3da70b43 Initial load
duke
parents:
diff changeset
   571
.TE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   572
.if \n-(b.=0 .nr c. \n(.c-\n(d.-19
90ce3da70b43 Initial load
duke
parents:
diff changeset
   573
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   574
.SH 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   575
このセクションでは、lvmid が 21891 であるローカル JVM の監視例をいくつか示します。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   576
.SS gcutil オプションの使用
90ce3da70b43 Initial load
duke
parents:
diff changeset
   577
この例では、lvmid 21891 にアタッチして、250 ミリ秒間隔で 7 つのサンプルを採取し、
90ce3da70b43 Initial load
duke
parents:
diff changeset
   578
.B \-gcutil 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   579
オプションでの指定に従って出力を表示します。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   580
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   581
.ft 3
90ce3da70b43 Initial load
duke
parents:
diff changeset
   582
.nf
90ce3da70b43 Initial load
duke
parents:
diff changeset
   583
jstat -gcutil 21891 250 7
90ce3da70b43 Initial load
duke
parents:
diff changeset
   584
  S0     S1     E      O      P     YGC    YGCT    FGC    FGCT     GCT
90ce3da70b43 Initial load
duke
parents:
diff changeset
   585
 12.44   0.00  27.20   9.49  96.70    78    0.176     5    0.495    0.672
90ce3da70b43 Initial load
duke
parents:
diff changeset
   586
 12.44   0.00  62.16   9.49  96.70    78    0.176     5    0.495    0.672
90ce3da70b43 Initial load
duke
parents:
diff changeset
   587
 12.44   0.00  83.97   9.49  96.70    78    0.176     5    0.495    0.672
90ce3da70b43 Initial load
duke
parents:
diff changeset
   588
  0.00   7.74   0.00   9.51  96.70    79    0.177     5    0.495    0.673
90ce3da70b43 Initial load
duke
parents:
diff changeset
   589
  0.00   7.74  23.37   9.51  96.70    79    0.177     5    0.495    0.673
90ce3da70b43 Initial load
duke
parents:
diff changeset
   590
  0.00   7.74  43.82   9.51  96.70    79    0.177     5    0.495    0.673
90ce3da70b43 Initial load
duke
parents:
diff changeset
   591
  0.00   7.74  58.11   9.51  96.71    79    0.177     5    0.495    0.673
90ce3da70b43 Initial load
duke
parents:
diff changeset
   592
.fi
90ce3da70b43 Initial load
duke
parents:
diff changeset
   593
.ft 1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   594
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   595
この例の出力は、3 番目と 4 番目のサンプルの間に若い世代のコレクションが発生したことを示しています。コレクションの所要時間は 0.001 秒であり、オブジェクトがエデンスペース (E) からオールドスペース (O) に昇格されたため、オールドスペースの使用率が 9.49% から 9.51% に増加しています。コレクションの前のサバイバースペースの使用率は 12.44% でしたが、このコレクションの後の使用率は、わずか 7.74% です。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   596
.SS 列見出し文字列の繰り返し
90ce3da70b43 Initial load
duke
parents:
diff changeset
   597
この例では、lvmid 21891 にアタッチして、250 ミリ秒間隔でサンプルを採取し、
90ce3da70b43 Initial load
duke
parents:
diff changeset
   598
.B \-gcutil 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   599
オプションでの指定に従って出力を表示します。また、
90ce3da70b43 Initial load
duke
parents:
diff changeset
   600
.B \-h3 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   601
オプションを使用して、3 行のデータごとに列見出しを出力します。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   602
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   603
.ft 3
90ce3da70b43 Initial load
duke
parents:
diff changeset
   604
.nf
90ce3da70b43 Initial load
duke
parents:
diff changeset
   605
jstat -gcnew -h3 21891 250
90ce3da70b43 Initial load
duke
parents:
diff changeset
   606
 S0C    S1C    S0U    S1U   TT MTT  DSS      EC       EU     YGC     YGCT
90ce3da70b43 Initial load
duke
parents:
diff changeset
   607
  64.0   64.0    0.0   31.7 31  31   32.0    512.0    178.6    249    0.203
90ce3da70b43 Initial load
duke
parents:
diff changeset
   608
  64.0   64.0    0.0   31.7 31  31   32.0    512.0    355.5    249    0.203
90ce3da70b43 Initial load
duke
parents:
diff changeset
   609
  64.0   64.0   35.4    0.0  2  31   32.0    512.0     21.9    250    0.204
90ce3da70b43 Initial load
duke
parents:
diff changeset
   610
 S0C    S1C    S0U    S1U   TT MTT  DSS      EC       EU     YGC     YGCT
90ce3da70b43 Initial load
duke
parents:
diff changeset
   611
  64.0   64.0   35.4    0.0  2  31   32.0    512.0    245.9    250    0.204
90ce3da70b43 Initial load
duke
parents:
diff changeset
   612
  64.0   64.0   35.4    0.0  2  31   32.0    512.0    421.1    250    0.204
90ce3da70b43 Initial load
duke
parents:
diff changeset
   613
  64.0   64.0    0.0   19.0 31  31   32.0    512.0     84.4    251    0.204
90ce3da70b43 Initial load
duke
parents:
diff changeset
   614
 S0C    S1C    S0U    S1U   TT MTT  DSS      EC       EU     YGC     YGCT
90ce3da70b43 Initial load
duke
parents:
diff changeset
   615
  64.0   64.0    0.0   19.0 31  31   32.0    512.0    306.7    251    0.204
90ce3da70b43 Initial load
duke
parents:
diff changeset
   616
.fi
90ce3da70b43 Initial load
duke
parents:
diff changeset
   617
.ft 1
90ce3da70b43 Initial load
duke
parents:
diff changeset
   618
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   619
見出し文字列の繰り返しを示しているほかに、この例は、2 番目と 3 番目のサンプルの間に若い世代の GC が発生したことを示しています。その所要時間は 0.001 秒でした。コレクションによって、サバイバースペース 0 の使用量 (S0U) が目標サバイバーサイズ (DSS) を超える十分なライブデータが見つかりました。結果として、オブジェクトは旧世代に昇格され (この出力には示されていない)、保有しきい値 (TT) が 31 から 2 に下がっています。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   620
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   621
5 番目と 6 番目のサンプルの間にもう 1 つのコレクションが発生しています。このコレクションでは、ごくわずかのサバイバーが見つかり、保有しきい値が 31 に戻っています。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   622
.SS 各サンプルのタイムスタンプの表示
90ce3da70b43 Initial load
duke
parents:
diff changeset
   623
この例では、lvmid 21891 にアタッチして、250 ミリ秒間隔で 3 つのサンプルを採取します。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   624
.B \-t 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   625
オプションを使用して、最初の列に各サンプルのタイムスタンプを生成します。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   626
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   627
.ft 3
90ce3da70b43 Initial load
duke
parents:
diff changeset
   628
.nf
90ce3da70b43 Initial load
duke
parents:
diff changeset
   629
jstat \-gcoldcapacity \-t 21891 250 3
90ce3da70b43 Initial load
duke
parents:
diff changeset
   630
Timestamp  OGCMN    OGCMX    OGC      OC       YGC   FGC   FGCT    GCT
90ce3da70b43 Initial load
duke
parents:
diff changeset
   631
150.1      1408.0   60544.0  11696.0  11696.0  194   80    2.874   3.799
90ce3da70b43 Initial load
duke
parents:
diff changeset
   632
150.4      1408.0   60544.0  13820.0  13820.0  194   81    2.938   3.863
90ce3da70b43 Initial load
duke
parents:
diff changeset
   633
150.7      1408.0   60544.0  13820.0  13820.0  194   81    2.938   3.863
90ce3da70b43 Initial load
duke
parents:
diff changeset
   634
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   635
.fi
90ce3da70b43 Initial load
duke
parents:
diff changeset
   636
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   637
\f2Timestamp\fP 列には、ターゲット JVM の起動時からの経過時間が、秒単位でレポートされています。さらに、\f3\-gcoldcapacity\fP 出力では、割り当て要求または昇格要求あるいはその両方を満たすためにヒープが拡張するごとに、Old 世代の容量 (OGC) と Old 領域の容量 (OC) とが増加していることがわかります。Old 世代の容量 (OGC) は、81 番目のフル GC (FGC) 後に、11696 KB から 13820 KB へ増加しています。Old 世代 (および領域) の最大容量は、60544 KB (OGCMX) なので、まだ拡張できる余裕が残されています。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   638
.SS 
90ce3da70b43 Initial load
duke
parents:
diff changeset
   639
リモート JVM のインストゥルメンテーションの監視
90ce3da70b43 Initial load
duke
parents:
diff changeset
   640
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   641
この例は、\f3\-gcutil\fP オプションを使用して、\f2remote.domain\fP というシステム上の \f2lvmid\fP 40496 に接続し、サンプルを秒単位で無期限に取得しています。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   642
.nf
90ce3da70b43 Initial load
duke
parents:
diff changeset
   643
\f3jstat \-gcutil 40496@remote.domain 1000\fP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   644
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   645
90ce3da70b43 Initial load
duke
parents:
diff changeset
   646
.fl
90ce3da70b43 Initial load
duke
parents:
diff changeset
   647
... \f2出力省略\fP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   648
.br
90ce3da70b43 Initial load
duke
parents:
diff changeset
   649
.fi
90ce3da70b43 Initial load
duke
parents:
diff changeset
   650
.LP
90ce3da70b43 Initial load
duke
parents:
diff changeset
   651
\f2lvmid\fP は、リモートホストの名前と結合されて、\f240496@remote.domain\fP の \f2vmid\fP を構成しています。結果として、この \f2vmid\fP は、\f3rmi\fP プロトコルを使用して、リモートホスト上のデフォルトの \f3jstatd\fP サーバと通信します。\f3jstatd\fP サーバは、\f3rmiregistry\fP を使用して、デフォルトの \f3rmiregistry\fP ポート (ポート 1099) にバインドされた \f2remote.domain\fP に配置されれます。
90ce3da70b43 Initial load
duke
parents:
diff changeset
   652
.SH 関連項目
90ce3da70b43 Initial load
duke
parents:
diff changeset
   653
.RS 3
90ce3da70b43 Initial load
duke
parents:
diff changeset
   654
.TP 2
90ce3da70b43 Initial load
duke
parents:
diff changeset
   655
*
90ce3da70b43 Initial load
duke
parents:
diff changeset
   656
java \- Java アプリケーション起動ツール
90ce3da70b43 Initial load
duke
parents:
diff changeset
   657
.TP 2
90ce3da70b43 Initial load
duke
parents:
diff changeset
   658
*
90ce3da70b43 Initial load
duke
parents:
diff changeset
   659
jps \- Java プロセスステータスツール
90ce3da70b43 Initial load
duke
parents:
diff changeset
   660
.TP 2
90ce3da70b43 Initial load
duke
parents:
diff changeset
   661
*
90ce3da70b43 Initial load
duke
parents:
diff changeset
   662
jstatd \- jvmstat デーモン
90ce3da70b43 Initial load
duke
parents:
diff changeset
   663
.TP 2
90ce3da70b43 Initial load
duke
parents:
diff changeset
   664
*
90ce3da70b43 Initial load
duke
parents:
diff changeset
   665
rmiregistry \- Java リモートオブジェクトレジストリ
90ce3da70b43 Initial load
duke
parents:
diff changeset
   666
.RE
90ce3da70b43 Initial load
duke
parents:
diff changeset
   667