RFR: 8226416: MonitorUsedDeflationThreshold can cause repeated async deflation requests [v2]
Daniel D.Daugherty
dcubed at openjdk.java.net
Fri Jan 8 03:11:11 UTC 2021
> Adding support for a diagnostic option called NoAsyncDeflationProgressMax
> with a default value of 3. If we have three async monitor deflation cycles in a
> row with zero monitors deflated, then we adjust the in_use_list_ceiling up.
>
> I've locally built and tested this fix on my MBP13 using the
> MonitorUsedDeflationThresholdTest.java test that I wrote when this issue
> first came up in June of 2019. I will be including this fix in my next Mach5
> Tier[1-3] testing batch.
Daniel D. Daugherty has updated the pull request incrementally with two additional commits since the last revision:
- Merge branch 'JDK-8259349' into JDK-8226416
- Fix build error on windows.
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/1993/files
- new: https://git.openjdk.java.net/jdk/pull/1993/files/af5c3fec..eca5066b
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1993&range=01
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1993&range=00-01
Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
Patch: https://git.openjdk.java.net/jdk/pull/1993.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/1993/head:pull/1993
PR: https://git.openjdk.java.net/jdk/pull/1993
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