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

[Eric Blevins]

I have been using deadline for years, KVM machines seem to perform best
with it.

Eric

On 05/06/2013 08:21 AM, Martin Maurer wrote:
> Hi all,
>
> We want to discuss the changing of the pve default I/O scheduler from CFQ to Deadline. I want to collect feedback, pros and cons here.
>
> CFQ:
> - only CFQ support priorities (ionice)
>
> Deadline:
> - No support for priorities but generally faster for KVM in some (or a lot of?) systems.
>
> The scheduler can always be changed manually if the default is not suited (e.g. in /etc/default/grub).
>
> What do you think about this? Please report your thoughts!
>
> Martin
>
>
>
>
>
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