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comparison src/share/vm/gc_implementation/g1/concurrentMark.cpp @ 3914:20213c8a3c40

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7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions Summary: It introduces ergonomic decision logging in G1 for the following heuristics: heap sizing, collection set construction, concurrent cycle initiation, and partially-young GC start/end. The code has a bit of refactoring in a few places to make the decision logging possible. It also replaces alternative ad-hoc logging that we have under different parameters and switches (G1_DEBUG, G1PolicyVerbose). Reviewed-by: johnc, ysr
author tonyp
date Wed, 07 Sep 2011 12:21:23 -0400
parents ff53346271fe
children 1847b501ae74
comparison
equal deleted inserted replaced
3913:27702f012017 3914:20213c8a3c40
26 #include "classfile/symbolTable.hpp" 26 #include "classfile/symbolTable.hpp"
27 #include "gc_implementation/g1/concurrentMark.inline.hpp" 27 #include "gc_implementation/g1/concurrentMark.inline.hpp"
28 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp" 28 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp"
29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" 29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
30 #include "gc_implementation/g1/g1CollectorPolicy.hpp" 30 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
31 #include "gc_implementation/g1/g1ErgoVerbose.hpp"
31 #include "gc_implementation/g1/g1OopClosures.inline.hpp" 32 #include "gc_implementation/g1/g1OopClosures.inline.hpp"
32 #include "gc_implementation/g1/g1RemSet.hpp" 33 #include "gc_implementation/g1/g1RemSet.hpp"
33 #include "gc_implementation/g1/heapRegionRemSet.hpp" 34 #include "gc_implementation/g1/heapRegionRemSet.hpp"
34 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" 35 #include "gc_implementation/g1/heapRegionSeq.inline.hpp"
35 #include "gc_implementation/shared/vmGCOperations.hpp" 36 #include "gc_implementation/shared/vmGCOperations.hpp"
1725 g1_par_count_task.work(0); 1726 g1_par_count_task.work(0);
1726 } 1727 }
1727 1728
1728 size_t known_garbage_bytes = 1729 size_t known_garbage_bytes =
1729 g1_par_count_task.used_bytes() - g1_par_count_task.live_bytes(); 1730 g1_par_count_task.used_bytes() - g1_par_count_task.live_bytes();
1730 #if 0
1731 gclog_or_tty->print_cr("used %1.2lf, live %1.2lf, garbage %1.2lf",
1732 (double) g1_par_count_task.used_bytes() / (double) (1024 * 1024),
1733 (double) g1_par_count_task.live_bytes() / (double) (1024 * 1024),
1734 (double) known_garbage_bytes / (double) (1024 * 1024));
1735 #endif // 0
1736 g1p->set_known_garbage_bytes(known_garbage_bytes); 1731 g1p->set_known_garbage_bytes(known_garbage_bytes);
1737 1732
1738 size_t start_used_bytes = g1h->used(); 1733 size_t start_used_bytes = g1h->used();
1739 _at_least_one_mark_complete = true; 1734 _at_least_one_mark_complete = true;
1740 g1h->set_marking_complete(); 1735 g1h->set_marking_complete();
1736
1737 ergo_verbose4(ErgoConcCycles,
1738 "finish cleanup",
1739 ergo_format_byte("occupancy")
1740 ergo_format_byte("capacity")
1741 ergo_format_byte_perc("known garbage"),
1742 start_used_bytes, g1h->capacity(),
1743 known_garbage_bytes,
1744 ((double) known_garbage_bytes / (double) g1h->capacity()) * 100.0);
1741 1745
1742 double count_end = os::elapsedTime(); 1746 double count_end = os::elapsedTime();
1743 double this_final_counting_time = (count_end - start); 1747 double this_final_counting_time = (count_end - start);
1744 if (G1PrintParCleanupStats) { 1748 if (G1PrintParCleanupStats) {
1745 gclog_or_tty->print_cr("Cleanup:"); 1749 gclog_or_tty->print_cr("Cleanup:");