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8059604: Add CompileThresholdScaling flag to control when methods are first compiled (with and withour TieredCompilation)

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This patch adds a new flag (CompileThresholdScaling) to control when methods are first compiled

Reviewed-by: anoll, iveresov, kvn
This commit is contained in:
Zoltan Majo 2014-10-15 14:00:41 +02:00
parent bde7fd61b4
commit ed26c7e640
6 changed files with 433 additions and 11 deletions
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12
hotspot/src/share/vm/runtime/simpleThresholdPolicy.inline.hpp
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@ -30,11 +30,11 @@ bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) {
switch(level) {
case CompLevel_none:
case CompLevel_limited_profile:
return (i > Tier3InvocationThreshold * scale) ||
(i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale);
return (i >= Tier3InvocationThreshold * scale) ||
(i >= Tier3MinInvocationThreshold * scale && i + b >= Tier3CompileThreshold * scale);
case CompLevel_full_profile:
return (i > Tier4InvocationThreshold * scale) ||
(i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale);
return (i >= Tier4InvocationThreshold * scale) ||
(i >= Tier4MinInvocationThreshold * scale && i + b >= Tier4CompileThreshold * scale);
}
return true;
}
@ -44,9 +44,9 @@ bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) {
switch(level) {
case CompLevel_none:
case CompLevel_limited_profile:
return b > Tier3BackEdgeThreshold * scale;
return b >= Tier3BackEdgeThreshold * scale;
case CompLevel_full_profile:
return b > Tier4BackEdgeThreshold * scale;
return b >= Tier4BackEdgeThreshold * scale;
}
return true;
}