Bruno Wolff III wrote:
> On Wed, Mar 05, 2008 at 14:35:41 -0500,
> Chris Snook <
csnook@...> wrote:
>> Ultimately, if latency is a high priority for you, you should switch to the
>> deadline scheduler.
>
> Is there an easy way to do this? My desktop seems pretty sluggish since
> switching to rawhide and I suspect it is disk IO related. I'd like to
> try out another scheduler and see if it helps.
At the grub screen, hit 'a' to append kernel arguments, and add
elevator=deadline to the list of parameters. If you like the results,
you can add it permanently by editing /boot/grub/grub.conf.
It's also possible that your sluggish rawhide performance is due to all
the extra debug options that are turned on in the rawhide kernel. I've
seen overhead as high as 30% on some workloads. There's been some
discussion of adding a 'nodebug' kernel variant to rawhide that's
compiled with roughly the same options as the stable Fedora kernel, but
I don't know when or if that's going to happen.
-- Chris
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