[8u] RFR: Backport of JDK-8222670: pathological case of JIT recompilation and code cache bloat
Liu, Xin
xxinliu at amazon.com
Thu May 16 17:23:19 UTC 2019
Hi, Reviewers,
Could you review this backport patch?
BUG: https://bugs.openjdk.java.net/browse/JDK-8222670
Webrev: https://cr.openjdk.java.net/~xliu/8222670/webrev.8u-dev/
I can’t cleanly apply the original patch to jdk8u. I made the following changes.
1. Include JDK-8223537. It solved suspend problem in blocking mode. One line change.
2. Shorter wait period. Otherwise, it’s easy to timeout for the test. It’s part of a JDK-8066770.
https://cr.openjdk.java.net/~xliu/8222670/webrev.8u-dev/test/compiler/whitebox/CompilerWhiteBoxTest.java.udiff.html
1. +1 for Tier4MinInvocationThreshold and Tier4CompileThreshold. Otherwise, we have to backport JDK-8059604, which looks like complicated.
https://cr.openjdk.java.net/~xliu/8222670/webrev.8u-dev/src/share/vm/prims/whitebox.cpp.udiff.html
Thanks,
--lx
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