Hi Janek,

On Tue, Aug 6, 2019 at 11:25 AM Janek Bevendorff
<janek.bevendo...@uni-weimar.de> wrote:
> > Here are tracker tickets to resolve the issues you encountered:
> >
> > https://tracker.ceph.com/issues/41140
> > https://tracker.ceph.com/issues/41141

The fix has been merged into master and will be backported soon. I've
also done testing in a large cluster to confirm the issue you found.
Using multiple processes to create files as fast as possible in a
single client reliably reproduced the issue. The MDS cannot recall
capabilities fast enough when the internal upkeep thread ran every 5
seconds. Moving the cache trimming and capability recall to a separate
thread running every second resolved the issue.

--
Patrick Donnelly, Ph.D.
He / Him / His
Senior Software Engineer
Red Hat Sunnyvale, CA
GPG: 19F28A586F808C2402351B93C3301A3E258DD79D
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