Mercurial > hg > truffle

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Tue Sep 06 21:03:51 2011 -0700
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Wed Sep 07 12:21:23 2011 -0400
@@ -28,6 +28,7 @@
 #include "gc_implementation/g1/concurrentMarkThread.inline.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
+#include "gc_implementation/g1/g1ErgoVerbose.hpp"
 #include "gc_implementation/g1/g1OopClosures.inline.hpp"
 #include "gc_implementation/g1/g1RemSet.hpp"
 #include "gc_implementation/g1/heapRegionRemSet.hpp"
@@ -1727,18 +1728,21 @@
 
   size_t known_garbage_bytes =
     g1_par_count_task.used_bytes() - g1_par_count_task.live_bytes();
-#if 0
-  gclog_or_tty->print_cr("used %1.2lf, live %1.2lf, garbage %1.2lf",
-                         (double) g1_par_count_task.used_bytes() / (double) (1024 * 1024),
-                         (double) g1_par_count_task.live_bytes() / (double) (1024 * 1024),
-                         (double) known_garbage_bytes / (double) (1024 * 1024));
-#endif // 0
   g1p->set_known_garbage_bytes(known_garbage_bytes);
 
   size_t start_used_bytes = g1h->used();
   _at_least_one_mark_complete = true;
   g1h->set_marking_complete();
 
+  ergo_verbose4(ErgoConcCycles,
+           "finish cleanup",
+           ergo_format_byte("occupancy")
+           ergo_format_byte("capacity")
+           ergo_format_byte_perc("known garbage"),
+           start_used_bytes, g1h->capacity(),
+           known_garbage_bytes,
+           ((double) known_garbage_bytes / (double) g1h->capacity()) * 100.0);
+
   double count_end = os::elapsedTime();
   double this_final_counting_time = (count_end - start);
   if (G1PrintParCleanupStats) {