RFR (S): JDK-8069004: Kitchensink hanged with 16Gb heap and GC pause >30 min
derek.white at oracle.com
Wed Apr 1 13:09:59 UTC 2015
On 3/31/15 6:09 AM, Bengt Rutisson wrote:
> Hi Derek,
> 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.
> Nice catch!
>> 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
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the hotspot-gc-dev