Am 08.11.2012 09:58, schrieb Alexandre DERUMIER:
What do you mean by that? I'm talking about the KVM guest not about the
ceph nodes.
Do you have tried to compare virtio-blk and virtio-scsi ?
How to change? Right now i'm using the PVE defaults => scsi-hd.
Do you have tried directly from the host with the rbd kernel module ?
No don't know how to use ;-)
Stefan
----- Mail original -----
De: "Stefan Priebe - Profihost AG" <s.priebe@xxxxxxxxxxxx>
À: "Mark Nelson" <mark.nelson@xxxxxxxxxxx>
Cc: "Joao Eduardo Luis" <joao.luis@xxxxxxxxxxx>, ceph-devel@xxxxxxxxxxxxxxx
Envoyé: Jeudi 8 Novembre 2012 09:45:17
Objet: Re: less cores more iops / speed
Am 08.11.2012 01:59, schrieb Mark Nelson:
There's also the context switching overhead. It'd be interesting to
know how much the writer processes were shifting around on cores.
What do you mean by that? I'm talking about the KVM guest not about the
ceph nodes.
Stefan, what tool were you using to do writes?
as always: fio ;-)
Stefan
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