--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp Wed Sep 25 17:23:41 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp Thu Sep 26 12:49:45 2013 +0200
@@ -125,25 +125,115 @@
_sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime;
}
+static double percent_of(size_t numerator, size_t denominator) {
+ if (denominator != 0) {
+ return (double)numerator / denominator * 100.0f;
+ } else {
+ return 0.0f;
+ }
+}
+
+static size_t round_to_K(size_t value) {
+ return value / K;
+}
+
+class RegionTypeCounter VALUE_OBJ_CLASS_SPEC {
+private:
+ const char* _name;
+
+ size_t _rs_mem_size;
+ size_t _cards_occupied;
+ size_t _amount;
+
+ size_t _code_root_mem_size;
+ size_t _code_root_elems;
+
+ double rs_mem_size_percent_of(size_t total) {
+ return percent_of(_rs_mem_size, total);
+ }
+
+ double cards_occupied_percent_of(size_t total) {
+ return percent_of(_cards_occupied, total);
+ }
+
+ double code_root_mem_size_percent_of(size_t total) {
+ return percent_of(_code_root_mem_size, total);
+ }
+
+ double code_root_elems_percent_of(size_t total) {
+ return percent_of(_code_root_elems, total);
+ }
+
+ size_t amount() const { return _amount; }
+
+public:
+
+ RegionTypeCounter(const char* name) : _name(name), _rs_mem_size(0), _cards_occupied(0),
+ _amount(0), _code_root_mem_size(0), _code_root_elems(0) { }
+
+ void add(size_t rs_mem_size, size_t cards_occupied, size_t code_root_mem_size,
+ size_t code_root_elems) {
+ _rs_mem_size += rs_mem_size;
+ _cards_occupied += cards_occupied;
+ _code_root_mem_size += code_root_mem_size;
+ _code_root_elems += code_root_elems;
+ _amount++;
+ }
+
+ size_t rs_mem_size() const { return _rs_mem_size; }
+ size_t cards_occupied() const { return _cards_occupied; }
+
+ size_t code_root_mem_size() const { return _code_root_mem_size; }
+ size_t code_root_elems() const { return _code_root_elems; }
+
+ void print_rs_mem_info_on(outputStream * out, size_t total) {
+ out->print_cr(" %8dK (%5.1f%%) by %zd %s regions", round_to_K(rs_mem_size()), rs_mem_size_percent_of(total), amount(), _name);
+ }
+
+ void print_cards_occupied_info_on(outputStream * out, size_t total) {
+ out->print_cr(" %8d (%5.1f%%) entries by %zd %s regions", cards_occupied(), cards_occupied_percent_of(total), amount(), _name);
+ }
+
+ void print_code_root_mem_info_on(outputStream * out, size_t total) {
+ out->print_cr(" %8dK (%5.1f%%) by %zd %s regions", round_to_K(code_root_mem_size()), code_root_mem_size_percent_of(total), amount(), _name);
+ }
+
+ void print_code_root_elems_info_on(outputStream * out, size_t total) {
+ out->print_cr(" %8d (%5.1f%%) elements by %zd %s regions", code_root_elems(), code_root_elems_percent_of(total), amount(), _name);
+ }
+};
+
+
class HRRSStatsIter: public HeapRegionClosure {
- size_t _occupied;
+private:
+ RegionTypeCounter _young;
+ RegionTypeCounter _humonguous;
+ RegionTypeCounter _free;
+ RegionTypeCounter _old;
+ RegionTypeCounter _all;
- size_t _total_rs_mem_sz;
size_t _max_rs_mem_sz;
HeapRegion* _max_rs_mem_sz_region;
- size_t _total_code_root_mem_sz;
+ size_t total_rs_mem_sz() const { return _all.rs_mem_size(); }
+ size_t total_cards_occupied() const { return _all.cards_occupied(); }
+
+ size_t max_rs_mem_sz() const { return _max_rs_mem_sz; }
+ HeapRegion* max_rs_mem_sz_region() const { return _max_rs_mem_sz_region; }
+
size_t _max_code_root_mem_sz;
HeapRegion* _max_code_root_mem_sz_region;
+
+ size_t total_code_root_mem_sz() const { return _all.code_root_mem_size(); }
+ size_t total_code_root_elems() const { return _all.code_root_elems(); }
+
+ size_t max_code_root_mem_sz() const { return _max_code_root_mem_sz; }
+ HeapRegion* max_code_root_mem_sz_region() const { return _max_code_root_mem_sz_region; }
+
public:
- HRRSStatsIter() :
- _occupied(0),
- _total_rs_mem_sz(0),
- _max_rs_mem_sz(0),
- _max_rs_mem_sz_region(NULL),
- _total_code_root_mem_sz(0),
- _max_code_root_mem_sz(0),
- _max_code_root_mem_sz_region(NULL)
+ HRRSStatsIter() : _all("All"), _young("Young"), _humonguous("Humonguous"),
+ _free("Free"), _old("Old"), _max_code_root_mem_sz_region(NULL), _max_rs_mem_sz_region(NULL),
+ _max_rs_mem_sz(0), _max_code_root_mem_sz(0)
{}
bool doHeapRegion(HeapRegion* r) {
@@ -156,46 +246,95 @@
_max_rs_mem_sz = rs_mem_sz;
_max_rs_mem_sz_region = r;
}
- _total_rs_mem_sz += rs_mem_sz;
-
+ size_t occupied_cards = hrrs->occupied();
size_t code_root_mem_sz = hrrs->strong_code_roots_mem_size();
- if (code_root_mem_sz > _max_code_root_mem_sz) {
- _max_code_root_mem_sz = code_root_mem_sz;
+ if (code_root_mem_sz > max_code_root_mem_sz()) {
_max_code_root_mem_sz_region = r;
}
- _total_code_root_mem_sz += code_root_mem_sz;
+ size_t code_root_elems = hrrs->strong_code_roots_list_length();
- size_t occ = hrrs->occupied();
- _occupied += occ;
+ RegionTypeCounter* current = NULL;
+ if (r->is_young()) {
+ current = &_young;
+ } else if (r->isHumongous()) {
+ current = &_humonguous;
+ } else if (r->is_empty()) {
+ current = &_free;
+ } else {
+ current = &_old;
+ }
+ current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
+ _all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
+
return false;
}
- size_t total_rs_mem_sz() { return _total_rs_mem_sz; }
- size_t max_rs_mem_sz() { return _max_rs_mem_sz; }
- HeapRegion* max_rs_mem_sz_region() { return _max_rs_mem_sz_region; }
- size_t total_code_root_mem_sz() { return _total_code_root_mem_sz; }
- size_t max_code_root_mem_sz() { return _max_code_root_mem_sz; }
- HeapRegion* max_code_root_mem_sz_region() { return _max_code_root_mem_sz_region; }
- size_t occupied() { return _occupied; }
+
+ void print_summary_on(outputStream* out) {
+ RegionTypeCounter* counters[] = { &_young, &_humonguous, &_free, &_old, NULL };
+
+ out->print_cr("\n Current rem set statistics");
+ out->print_cr(" Total per region rem sets sizes = "SIZE_FORMAT"K."
+ " Max = "SIZE_FORMAT"K.",
+ round_to_K(total_rs_mem_sz()), round_to_K(max_rs_mem_sz()));
+ for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
+ (*current)->print_rs_mem_info_on(out, total_rs_mem_sz());
+ }
+
+ out->print_cr(" Static structures = "SIZE_FORMAT"K,"
+ " free_lists = "SIZE_FORMAT"K.",
+ round_to_K(HeapRegionRemSet::static_mem_size()),
+ round_to_K(HeapRegionRemSet::fl_mem_size()));
+
+ out->print_cr(" "SIZE_FORMAT" occupied cards represented.",
+ total_cards_occupied());
+ for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
+ (*current)->print_cards_occupied_info_on(out, total_cards_occupied());
+ }
+
+ // Largest sized rem set region statistics
+ HeapRegionRemSet* rem_set = max_rs_mem_sz_region()->rem_set();
+ out->print_cr(" Region with largest rem set = "HR_FORMAT", "
+ "size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.",
+ HR_FORMAT_PARAMS(max_rs_mem_sz_region()),
+ round_to_K(rem_set->mem_size()),
+ round_to_K(rem_set->occupied()));
+
+ // Strong code root statistics
+ HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region()->rem_set();
+ out->print_cr(" Total heap region code root sets sizes = "SIZE_FORMAT"K."
+ " Max = "SIZE_FORMAT"K.",
+ round_to_K(total_code_root_mem_sz()),
+ round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()));
+ for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
+ (*current)->print_code_root_mem_info_on(out, total_code_root_mem_sz());
+ }
+
+ out->print_cr(" "SIZE_FORMAT" code roots represented.",
+ total_code_root_elems());
+ for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
+ (*current)->print_code_root_elems_info_on(out, total_code_root_elems());
+ }
+
+ out->print_cr(" Region with largest amount of code roots = "HR_FORMAT", "
+ "size = "SIZE_FORMAT "K, num_elems = "SIZE_FORMAT".",
+ HR_FORMAT_PARAMS(max_code_root_mem_sz_region()),
+ round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()),
+ round_to_K(max_code_root_rem_set->strong_code_roots_list_length()));
+ }
};
-double calc_percentage(size_t numerator, size_t denominator) {
- if (denominator != 0) {
- return (double)numerator / denominator * 100.0;
- } else {
- return 0.0f;
- }
-}
-
void G1RemSetSummary::print_on(outputStream* out) {
- out->print_cr("\n Concurrent RS processed "SIZE_FORMAT" cards",
+ out->print_cr("\n Recent concurrent refinement statistics");
+ out->print_cr(" Processed "SIZE_FORMAT" cards",
num_concurrent_refined_cards());
out->print_cr(" Of %d completed buffers:", num_processed_buf_total());
out->print_cr(" %8d (%5.1f%%) by concurrent RS threads.",
num_processed_buf_total(),
- calc_percentage(num_processed_buf_rs_threads(), num_processed_buf_total()));
+ percent_of(num_processed_buf_rs_threads(), num_processed_buf_total()));
out->print_cr(" %8d (%5.1f%%) by mutator threads.",
num_processed_buf_mutator(),
- calc_percentage(num_processed_buf_mutator(), num_processed_buf_total()));
+ percent_of(num_processed_buf_mutator(), num_processed_buf_total()));
+ out->print_cr(" Did %d coarsenings.", num_coarsenings());
out->print_cr(" Concurrent RS threads times (s)");
out->print(" ");
for (uint i = 0; i < _num_vtimes; i++) {
@@ -207,33 +346,5 @@
HRRSStatsIter blk;
G1CollectedHeap::heap()->heap_region_iterate(&blk);
- // RemSet stats
- out->print_cr(" Total heap region rem set sizes = "SIZE_FORMAT"K."
- " Max = "SIZE_FORMAT"K.",
- blk.total_rs_mem_sz()/K, blk.max_rs_mem_sz()/K);
- out->print_cr(" Static structures = "SIZE_FORMAT"K,"
- " free_lists = "SIZE_FORMAT"K.",
- HeapRegionRemSet::static_mem_size() / K,
- HeapRegionRemSet::fl_mem_size() / K);
- out->print_cr(" "SIZE_FORMAT" occupied cards represented.",
- blk.occupied());
- HeapRegion* max_rs_mem_sz_region = blk.max_rs_mem_sz_region();
- HeapRegionRemSet* max_rs_rem_set = max_rs_mem_sz_region->rem_set();
- out->print_cr(" Max size region = "HR_FORMAT", "
- "size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.",
- HR_FORMAT_PARAMS(max_rs_mem_sz_region),
- (max_rs_rem_set->mem_size() + K - 1)/K,
- (max_rs_rem_set->occupied() + K - 1)/K);
- out->print_cr(" Did %d coarsenings.", num_coarsenings());
- // Strong code root stats
- out->print_cr(" Total heap region code-root set sizes = "SIZE_FORMAT"K."
- " Max = "SIZE_FORMAT"K.",
- blk.total_code_root_mem_sz()/K, blk.max_code_root_mem_sz()/K);
- HeapRegion* max_code_root_mem_sz_region = blk.max_code_root_mem_sz_region();
- HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region->rem_set();
- out->print_cr(" Max size region = "HR_FORMAT", "
- "size = "SIZE_FORMAT "K, num_elems = "SIZE_FORMAT".",
- HR_FORMAT_PARAMS(max_code_root_mem_sz_region),
- (max_code_root_rem_set->strong_code_roots_mem_size() + K - 1)/K,
- (max_code_root_rem_set->strong_code_roots_list_length()));
+ blk.print_summary_on(out);
}