RFR (S): JDK-8069004: Kitchensink hanged with 16Gb heap and GC pause >30 min
bengt.rutisson at oracle.com
Tue Mar 31 10:09:31 UTC 2015
On 2015-03-30 18:54, Derek White wrote:
> This is a P1 bug in JDK 9 - a conflict when freeing
> continues_humongous regions.
> The scenario is a region was continues_humongous is then freed by one
> worker when the whole H-object is freed. The continues_humongous
> region needs to be claimed by the first worker, otherwise other
> workers may run into the free region. It turns out the fix was to
> revert a change made a few months ago.
> It didn't help out that an assert actually did the right thing, so it
> never failed in debug code :-)
Yes, that must have been very confusing!
> BUG: JDK-8069004 Kitchensink hanged with 16Gb heap and GC pause >30
> min <https://bugs.openjdk.java.net/browse/JDK-8069004>
> Webrev: http://cr.openjdk.java.net/~drwhite/8069004/webrev.00/
Change looks good.
> Ran jprt.
> - Derek
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