Re: RBD poor performance

["Vitaliy Filippov" <vitalif@xxxxxxxxxx>]

To me it seems Ceph's iops limit is 10000 (maybe 15000 with BIS hardware)  
per an OSD. After that number it starts to get stuck on CPU.

I've tried to create a pool from 3 OSDs in loop devices over tmpfs and  
I've only got ~15000 iops :) good disks aren't the bottleneck, CPU is.

--
With best regards,
  Vitaliy Filippov
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