On 30/06/2020 11:12 pm, Mark Schouten wrote:
Could be that (deep) scrubs are periodically killing your performance.
There are some tweaks available to make them less invading:
osd_scrub_chunk_min=20 # 5
osd_scrub_sleep=4 # 0
Thanks, I don't think its deep scrub - things seem ok when a scrub is
running, but I will test it to be sure. Have also been meaning to
restrict them to after hours.
And then some:
https://docs.ceph.com/docs/master/rados/configuration/osd-config-ref/
Best option is really to place spinning disks with SSD..
Would love to, alas, SMB budget restrictions. Wanting champagne
performance on a beer budget :)
--
Lindsay
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