[pve-devel] ceph news: syncfs kernel support for next stable release

[Alexandre DERUMIER]

>>Right now 23.000 iops with random 4k writes. 
Is it the limit by vm or for the total cluster ?



----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: "Dietmar Maurer" <dietmar at proxmox.com>, pve-devel at pve.proxmox.com 
Envoyé: Mardi 4 Décembre 2012 16:26:24 
Objet: Re: [pve-devel] ceph news: syncfs kernel support for next stable release 

Hi, 

Am 04.12.2012 15:59, schrieb Alexandre DERUMIER: 
>>> So the performance problems are already solved? 
> 
> I can't get more than 6000iops by kvm guest with my current setup. (I don't know where is the bottleneck, maybe network latency or cpu on my cluster) 
> 
> But Stefan has achieve a lot more with his ssd cluster. 
> Stefan, what are your last bench results ? 
Right now 23.000 iops with random 4k writes. 

> Maybe some conf file tuning advice could be fine :) 
Disable debugging see ceph list and disable auth. 

Greets, 
Stefan