[pve-devel] default I/O scheduler - CFQ or Deadline?

Dietmar Maurer dietmar at proxmox.com
Tue May 7 05:48:47 CEST 2013

> If I remember, some openvz features works only with cfq ? (ionice, openvz IO
> priorities)
> see:
> http://pve.proxmox.com/pipermail/pve-devel/2012-March/002488.html

Yes, but we measure incredible bad performance with cfq. We get fsync
rates of 250 instead of 3000 on ext4 (factor 12!). So iopriorities makes no
sense if you are already 10 time slower?

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