Mingming Cao <[email protected]> wrote:
>
> On 2.6.14, the
> fall back io scheduler (if the chosen io scheduler is not found) is set
> to the default io scheduler (anticipatory, in this case), but since
> 2.6.15-rc1, this semanistic is changed to fall back to noop.
OK. And I assume that AS wasn't compiled, so that's why it fell back?
I actually thought that elevator= got removed, now we have
/sys/block/sda/queue/scheduler. But I guess that's not very useful with
CONFIG_SYSFS=n.
> Is there any reason to fall back to noop instead of as? It seems
> anticipatory is much better than noop for ext3 with large sequential
> write tests (i.e, 1G dd test) ...
I suspect that was an accident. Jens?
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