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6765954: par compact - stress mode for splitting young gen spaces

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Reviewed-by: jmasa
This commit is contained in:
John Coomes 2008-12-11 12:05:21 -08:00
parent 7a9585170d
commit 8fc946854c
4 changed files with 207 additions and 12 deletions
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10
hotspot/src/share/vm/runtime/arguments.cpp
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@ -1517,6 +1517,16 @@ bool Arguments::check_vm_args_consistency() {
MarkSweepAlwaysCompactCount = 1; // Move objects every gc.
}
if (UseParallelOldGC && ParallelOldGCSplitALot) {
// Settings to encourage splitting.
if (!FLAG_IS_CMDLINE(NewRatio)) {
FLAG_SET_CMDLINE(intx, NewRatio, 2);
}
if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) {
FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
}
}
status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
status = status && verify_percentage(GCTimeLimit, "GCTimeLimit");
if (GCTimeLimit == 100) {