[GeoNode-users] Geoserver keeps CPU at 100%

[Simone Giannecchini]

Dear Stefano,
something like that happens usually when you have large raster dataset that
are not optimized and you put them under load.
Does this ring a bell?

Regards,
Simone Giannecchini
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On Wed, Jul 11, 2018 at 9:10 AM <Stefano.LUONI at ext.ec.europa.eu> wrote:

> Hi everyone,
>
> I've been experiencing a strange issue for a few days now and I didn't
> manage to solve it yet. There is something wrong with Geoserver's Java
> threads, as after some usage, the navigation on website suddenly becomes
> slow and when executing a "top" on server, I find all CPU cores at 100% and
> a long list of tomcat8 processes running, even if no one is accessing the
> site.
>
> Unfortunately, checking the logs doesn't give me a clue of what's
> happening, as warnings and errors are constantly changing and so far I was
> not able to spot the exact moment when Java failures are triggered.
>
> I'm running Geonode 2.7.5, with Geoserver 2.12 snapshot on an Ubuntu 16.04
> Server. I already tried upgrading both tomcat8 and OpenJDK from apt, but it
> didn't solve the issue.
>
> These are building infos on Geoserver:
>
> *Build Information*
> *GeoServer Version*
> *2.12-SNAPSHOT*
> *Git Revision*
> *ba5175e3bcc4a5d2bc472809eccad682cc180cd8*
> *Build Date*
> *29-Mar-2018 14:27*
> *GeoTools Version*
> *18-SNAPSHOT (rev c41e79c4aaa3ec2db3b0f1e1ed4a5d485fddb75a)*
> *GeoWebCache Version*
> *1.12-SNAPSHOT (rev
> fd34a157375068f0a88f43f4abef154daaca7017/fd34a157375068f0a88f43f4abef154daaca7017)*
>
>
> I also tried updating Geoserver version to 2.13, but some layers (defined
> by SQL queries) stopped working, hence I had to rollback to 2.12.
>
> This machine has been running fine for months, and only a few days ago
> started having this issue; we didn't install anything new, so I'm wondering
> if any of the layers uploaded is somehow causing the problem.
>
> I attached an extraction of Geoserver log, hoping this can give you some
> hints.
>
> Thanks,
>
> Stefano
> _______________________________________________
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> geonode-users at lists.osgeo.org
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>
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