Re: [Xen-users] io scheduler

[Anand <xen.mails@xxxxxxxxx>]

On 1/10/06, Mogens Valentin <mogensv@xxxxxxxxxxxxxxxx> wrote:

On non-xen, yes. There's some benchmarks somewhere (don't seem to find
them right now) about advanteges of the various ones.
/usr/src/linux/Documentation/kernel-parameters.txt  says a few words.

From the above kernel-parameters.txt

        elevator=       [IOSCHED]
                        Format: {"as"|"cfq"|"deadline"|"noop"}
                        See Documentation/block/as-
iosched.txt
                        and Documentation/block/deadline-iosched.txt for details.

I tried to pass elevator=cfq on the dom0, it worked out. On domU however i am passing the same parameter and the scheduler is still noop.

-bash-3.00# cat /sys/block/sda1/queue/scheduler
[noop] anticipatory deadline cfq

Any ideas why its using 2 different schedulers ?

-- 

regards,

Anand
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