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comparison src/share/vm/runtime/arguments.cpp @ 1356:56507bcd639e

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6937160: G1: should observe GCTimeRatio Summary: Remove the G1GCPercent parameter, that specifies the desired GC overhead percentage in G1, and observe the GCTimeRatio parameter instead. Reviewed-by: jmasa, johnc
author tonyp
date Tue, 30 Mar 2010 15:36:55 -0400
parents cc98cc548f51
children 9e5e83ca2259 2338d41fbd81
comparison
equal deleted inserted replaced
1332:4b60f23c4223 1356:56507bcd639e
1350 } 1350 }
1351 if (PrintGCDetails && Verbose) { 1351 if (PrintGCDetails && Verbose) {
1352 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", 1352 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk",
1353 MarkStackSize / K, MarkStackSizeMax / K); 1353 MarkStackSize / K, MarkStackSizeMax / K);
1354 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); 1354 tty->print_cr("ConcGCThreads: %u", ConcGCThreads);
1355 }
1356
1357 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) {
1358 // In G1, we want the default GC overhead goal to be higher than
1359 // say in PS. So we set it here to 10%. Otherwise the heap might
1360 // be expanded more aggressively than we would like it to. In
1361 // fact, even 10% seems to not be high enough in some cases
1362 // (especially small GC stress tests that the main thing they do
1363 // is allocation). We might consider increase it further.
1364 FLAG_SET_DEFAULT(GCTimeRatio, 9);
1355 } 1365 }
1356 } 1366 }
1357 1367
1358 void Arguments::set_heap_size() { 1368 void Arguments::set_heap_size() {
1359 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { 1369 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) {