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6866591: G1: print update buffer processing stats more often

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It adds parameter -XX:+G1SummarizeRSetStatsPeriod that causes update buffer processing information to be printed periodically. It also includes two small formatting changes.

Reviewed-by: jmasa, jcoomes, ysr
This commit is contained in:
Antonios Printezis 2009-07-30 14:50:58 -04:00
parent 5f7ed79e3c
commit 1d0a8b2945
2 changed files with 13 additions and 2 deletions
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5
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
View file

@ -2845,6 +2845,11 @@ G1CollectedHeap::do_collection_pause_at_safepoint() {
if (PrintHeapAtGC) { if (PrintHeapAtGC) {
Universe::print_heap_after_gc(); Universe::print_heap_after_gc();
} }
if (G1SummarizeRSetStats &&
(G1SummarizeRSetStatsPeriod > 0) &&
(total_collections() % G1SummarizeRSetStatsPeriod == 0)) {
g1_rem_set()->print_summary_info();
}
} }
void G1CollectedHeap::set_gc_alloc_region(int purpose, HeapRegion* r) { void G1CollectedHeap::set_gc_alloc_region(int purpose, HeapRegion* r) {

10
hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp
View file

@ -34,7 +34,7 @@
product(intx, G1ConfidencePercent, 50, \ product(intx, G1ConfidencePercent, 50, \
"Confidence level for MMU/pause predictions") \ "Confidence level for MMU/pause predictions") \
\ \
develop(intx, G1MarkingOverheadPercent, 0, \ develop(intx, G1MarkingOverheadPercent, 0, \
"Overhead of concurrent marking") \ "Overhead of concurrent marking") \
\ \
develop(bool, G1AccountConcurrentOverhead, false, \ develop(bool, G1AccountConcurrentOverhead, false, \
@ -47,7 +47,7 @@
develop(bool, G1Gen, true, \ develop(bool, G1Gen, true, \
"If true, it will enable the generational G1") \ "If true, it will enable the generational G1") \
\ \
develop(intx, G1GCPercent, 10, \ develop(intx, G1GCPercent, 10, \
"The desired percent time spent on GC") \ "The desired percent time spent on GC") \
\ \
develop(intx, G1PolicyVerbose, 0, \ develop(intx, G1PolicyVerbose, 0, \
@ -74,6 +74,12 @@
diagnostic(bool, G1SummarizeRSetStats, false, \ diagnostic(bool, G1SummarizeRSetStats, false, \
"Summarize remembered set processing info") \ "Summarize remembered set processing info") \
\ \
diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
"The period (in number of GCs) at which we will generate " \
"update buffer processing info " \
"(0 means do not periodically generate this info); " \
"it also requires -XX:+G1SummarizeRSetStats") \
\
diagnostic(bool, G1SummarizeZFStats, false, \ diagnostic(bool, G1SummarizeZFStats, false, \
"Summarize zero-filling info") \ "Summarize zero-filling info") \
\ \