Hi Marc and Dan,
thanks for your quick responses assuring me that we did nothing totally
wrong.
Regards
--
Robert Sander
Heinlein Support GmbH
Schwedter Str. 8/9b, 10119 Berlin
http://www.heinlein-support.de
Tel: 030 / 405051-43
Fax: 030 / 405051-19
Zwangsangaben lt. §35a GmbHG:
HRB 93818 B
And to add some references, there is a PR on hold here:
https://github.com/ceph/ceph/pull/38044 which links some relevant
trackers entries.
Outside of large block.db removals (e.g. from backfilling or snap
trimming) we didn't notice a huge difference -- though that is not
conclusive.
There are
Hi Robert,
We are definitely aware of this issue. It appears to often be related
to snap trimming and we believe possibly related to excessive thrashing
of the rocksdb block cache. I suspect that when bluefs_buffered_io is
enabled it hides the issue and people don't notice the problem, but
