Hi everyone! On the old prod cluster
- baremetal, 5 nodes (24 cpu, 256G RAM) - ceph 0.80.9 filestore - 105 osd, size 114TB (each osd 1.1T, SAS Seagate ST1200MM0018) , raw used 60% - 15 journals (eash journal 0.4TB, Toshiba PX04SMB040) - net 20Gbps - 5 pools, size 2, min_size 1 we have discovered recently pretty high Average Apply latency, near 20 ms. Using ceph osd perf I can see that sometimes osd's apply latency could be high as 300-400 ms on some disks. How I can tune ceph in order to reduce this latency? ceph.conf: https://pastebin.com/raw/MeF00YLG?
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