GC duration and pause time grow linearly

[Roman Kennke]

Could be -ClassUnloading biting because it keeps piling up
Classes/ClassLoaders.

Roman

Aleksey Shipilev <shade at redhat.com> schrieb am Mo., 1. Juni 2020, 10:34:

> On 6/1/20 9:16 AM, Kirill Ilyukhin wrote:
> > Understood about JDK 13. Will try updating to 14u, but it is going to
> take a month or two to get the
> > data because CG/Pause time grows very slowly.
>
> If you have a staging environment for experiments, forcing back-to-back
> GCs with
> -XX:ShenandoahGCHeuristics=aggressive might be interesting to stress out
> the workload without
> waiting for months.
>
> 14u nightlies (targeting 14.0.2 to be released in July) have the verbose
> per-cycle logging (enabled
> with -Xlog:gc+stats), and that should point to the which work actually
> goes up and up:
>   https://builds.shipilev.net/openjdk-jdk14/
>
> > Please try the URL below, this is gceasy.io <http://gceasy.io> report I
> was referring to.
> >
> https://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMjAvMDYvMS8tLWdjLnN3MTIubG9nLmd6LS02LTU5LTI3&channel=WEB
>
> Thanks! It is weird to see most pauses growing. Something is definitely
> off.
>
> --
> -Aleksey
>
>