Hi
I have installed 6 node ceph cluster and doing a performance bench mark for
the same using Nova VMs. What I have observed that FIO random write reports
around 250 MBps for 1M block size and PGs 4096 and *650MBps for iM block
size and PG counts 2048* . Can some body let me know if I am missing any
ceph Architecture point here ? As per my understanding PG numbers are
mainly involved in calculating the hash and should not effect performance
so much.
root@ceph-mon01 ~]# ceph -s
cluster 47b3b559-f93c-4259-a6fb-97b00d87c55a
health HEALTH_WARN clock skew detected on mon.ceph-mon02, mon.ceph
-mon03
monmap e1: 3 mons at {ceph-mon01=*.*.*.*:6789/0,ceph
-mon02=*.*.*.*:6789/0,ceph-mon03=*.*.*.*:6789/0
<http://192.168.10.19:6789/0,ceph-mon02=192.168.10.20:6789/0,ceph-mon03=192.168.10.21:6789/0>},
election epoch 14, quorum 0,1,2 ceph-mon01,ceph-mon02,ceph-mon03
osdmap e603: 36 osds: 36 up, 36 in
pgmap v40812: 5120 pgs, 2 pools, 179 GB data, 569 kobjects
522 GB used, 9349 GB / 9872 GB avail
5120 active+clean
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