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xen-devel
RE: [Xen-devel] Xen 3.0.3 disk i/o
> I'm using the kernel option "elevator=cfq" on both dom0 and domU's.
> However, the output of "cat /sys/block/sda1/queue/scheduler" within a
domU
> is still "[noop] anticipatory deadline cfq". Does this mean that cfq
is NOT
> being used even though the dmesg shows "io scheduler cfq registered
> (default)".
>
> ...dom0 shows "noop anticipatory deadline [cfq]"
That means you're using cfq in dom0, which is what you want. Now you can
use 'ionice' to control scheduling from different domU block devices.
It doesn't matter what you use in domU, noop is fine.
Ian
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