Strange bug inside jetty at shenandoah/jdk8u

[Kirill A. Korinsky]

Well,

Simpler case includes decreasing heap to 1Gb.

I attached two file:
 - errors.log with jetty errors
 - gc.log with gc.log

It run at fedora 27 openjdk-1.8.0 without fast debug.

Same setting but without Shenandoah doest reproduce this.

If I increase heap size this issue is making rare. Since 6Gb heap I can't reproduce it. Maybe it help.

--
wbr, Kirill

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> On 19 Dec 2017, at 19:40, Aleksey Shipilev <shade at redhat.com> wrote:
> 
> On 12/19/2017 04:37 PM, Kirill A. Korinsky wrote:
>> Yes, this machine has a limit for docker container. But it is 6Gb.
> 
> -Xmx4g does not mean JVM RSS is exactly 4 GB -- native things are also there, and it might explain
> what we see.
> 
>> Anyway, original bug is existed but I can't reproduce it yet on simpler case :(
>> 
>> I can only hide it (or make it rare?) by increasing heap.
> 
> Ok, try this on simpler case: -XX:ShenandoahGCHeuristics=aggressive
> 
> Thanks,
> -Aleksey
>