Re: CEPH Cluster performance review

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>>> during scrubbing, OSD latency spikes to 300-600 ms,

>> I have seen Ceph clusters spike to several seconds per IO
>> operation as they were designed for the same goals.

>>> resulting in sluggish performance for all VMs. Additionally,
>>> some OSDs fail during the scrubbing process.

>> Most likely they time out because of IO congestion rather than
>> failing.

> bluestore(/var/lib/ceph/osd/ceph-10) log_latency slow operation observed for next, latency = 74835459564ns
> bluestore(/var/lib/ceph/osd/ceph-10) log_latency slow operation observed for next, latency = 42822161884ns

7.48s? 4.28s?
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