Thank you for the suggestion. It does indeed seem to explain why the OSD nodes
are no longer using the Buffers for caching.
Unfortunately, changing the value bluefs_buffered_io does not seem to make any
difference in performance. I will keep looking for clues.
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Just shooting in the dark here, but you may be affected by similar issue I
had a while back, it was discussed here:
https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/ZOPBOY6XQOYOV6CQMY27XM37OC6DKWZ7/
In short - they've changed setting bluefs_buffered_io to false in the
recent Nautilu
I am advocating already a long time for publishing testing data of some
basic test cluster against different ceph releases. Just a basic ceph
cluster that covers most configs and run the same tests, so you can
compare just ceph performance. That would mean a lot for smaller
companies that do
