GC duration and pause time grow linearly

[Kirill Ilyukhin]

Aleksey,

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.

Please try the URL below, this is gceasy.io report I was referring to.
https://gceasy.io/my-gc-report.jsp?p=c2hhcmVkLzIwMjAvMDYvMS8tLWdjLnN3MTIubG9nLmd6LS02LTU5LTI3&channel=WEB

Thank you,
Kirill

On Mon, 1 Jun 2020 at 15:34, Aleksey Shipilev <shade at redhat.com> wrote:

> On 6/1/20 5:51 AM, Kirill Ilyukhin wrote:
> > Please look at the attached images, these are charts built by cgeasy.io
> for
> > my GC log. GC/pause time grows as if it were a linear function of JVM
> > uptime. Is this an expected behavior? I am not complaining, performance
> is
> > good enough, but GC/pause time trend looks a bit suspicious.
>
> If application does not change its load profile, then it is not the
> intended behavior.
>
> > This JVM is a standby instance of Tomcat 9.0.22 as a Windows service,
> doing
> > almost nothing. Most of GC are time-triggered, every 5 minutes.
> > Please let me know if you need more information.
>
> Unfortunately, JDK 13 is past its support lifetime. And it lacks the more
> extensive per-cycle
> logging to really follow up on this. Take either 14u or 11u nightlies?
>
> > [image: image.png]
> > [image: image.png]
> > [image: image.png]
>
> Attachments are stripped on this list, please post URLs to somewhere else?
> Verbatim GC logs would be
> even better, from either 14u or 11u nightlies.
>
> --
> Thanks,
> -Aleksey
>
>