[pve-devel] less cores more iops / speed

[Stefan Priebe - Profihost AG]

Am 09.11.2012 11:31, schrieb Alexandre DERUMIER:
>>> Yes. CPU Load in Ceph for rand. 4k writes can be dropped by 50% when
>>> disabling all debug setting (see my last post on ceph mailinglist).
>
> I just see it, great,I'll test it on my side :)
>
> (how many ssds - nodes ?)  I hope that Intank is working on random io performance.
I have 5 nodes with 4 SSDs each.

> I don't understand why we can't get more iops, if they are no cpu or disks bottleneck... (or they are locks somewhere ....)
>
> I really would like to known if iops scale with the number of nodes...

To me yes. With 3 Nodes i had a max of 10.000 iops.

Stefan