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changeset 4796:9cc209978fc0

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8020155: PSR:PERF G1 not collecting old regions when humongous allocations interfer Summary: Take _last_young_gc into account when deciding on starting a concurrent mark. Also reviewed-by: per.liden@oracle.com. Reviewed-by: tschatzl, johnc
author brutisso
date Thu, 11 Jul 2013 11:33:27 +0200
parents 79c6a69a317e
children f82d5b2e8342
files src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
diffstat 1 files changed, 2 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Fri Jul 12 16:51:50 2013 -0400
+++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Thu Jul 11 11:33:27 2013 +0200
@@ -870,7 +870,7 @@
   size_t alloc_byte_size = alloc_word_size * HeapWordSize;
 
   if ((cur_used_bytes + alloc_byte_size) > marking_initiating_used_threshold) {
-    if (gcs_are_young()) {
+    if (gcs_are_young() && !_last_young_gc) {
       ergo_verbose5(ErgoConcCycles,
         "request concurrent cycle initiation",
         ergo_format_reason("occupancy higher than threshold")
@@ -928,7 +928,7 @@
   last_pause_included_initial_mark = during_initial_mark_pause();
   if (last_pause_included_initial_mark) {
     record_concurrent_mark_init_end(0.0);
-  } else if (!_last_young_gc && need_to_start_conc_mark("end of GC")) {
+  } else if (need_to_start_conc_mark("end of GC")) {
     // Note: this might have already been set, if during the last
     // pause we decided to start a cycle but at the beginning of
     // this pause we decided to postpone it. That's OK.