--- a/src/hotspot/os/bsd/os_bsd.cpp	Tue Mar 26 07:24:26 2019 -0400
+++ b/src/hotspot/os/bsd/os_bsd.cpp	Fri Mar 22 04:47:02 2019 -0700
@@ -33,6 +33,7 @@
 #include "compiler/disassembler.hpp"
 #include "interpreter/interpreter.hpp"
 #include "logging/log.hpp"
+#include "logging/logStream.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/filemap.hpp"
 #include "oops/oop.inline.hpp"
@@ -743,6 +744,11 @@
     } else {
       log_warning(os, thread)("Failed to start thread - pthread_create failed (%s) for attributes: %s.",
         os::errno_name(ret), os::Posix::describe_pthread_attr(buf, sizeof(buf), &attr));
+      // Log some OS information which might explain why creating the thread failed.
+      log_info(os, thread)("Number of threads approx. running in the VM: %d", Threads::number_of_threads());
+      LogStream st(Log(os, thread)::info());
+      os::Posix::print_rlimit_info(&st);
+      os::print_memory_info(&st);
     }
 
     pthread_attr_destroy(&attr);