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SubjectRe: [ANNOUNCE] RSDL completely fair starvation free interactive cpu scheduler
Linus Torvalds wrote:
>
> On Mon, 5 Mar 2007, Ed Tomlinson wrote:
>> The patch _does_ make a difference. For instance reading mail with freenet working
>> hard (threaded java application) and gentoo's emerge triggering compiles to update the
>> box is much smoother.
>>
>> Think this scheduler needs serious looking at.
>
> I agree, partly because it's obviously been getting rave reviews so far,
> but mainly because it looks like you can think about behaviour a lot
> better, something that was always very hard with the interactivity
> boosters with process state history.
>
> I'm not at all opposed to this, but we do need:
> - to not do it at this stage in the stable kernel
> - to let it sit in -mm for at least a short while
> - and generally more people testing more loads.
>
Please, could you now rethink plugable scheduler as well? Even if one
had to be chosen at boot time and couldn't be change thereafter, it
would still allow a few new thoughts to be included.

> I don't actually worry too much about switching out a CPU scheduler: those
> things are places where you *can* largely read the source code and get an
> idea for them (although with the kind of history state that we currently
> have, it's really really hard). But at the very least they aren't likely
> to have subtle bugs that show up elsewhere, so...
>
I confess that the default scheduler works for me most of the time, i/o
tuning is more productive. I want tot test with kvm load, but
2.6.21-rc3-git3 doesn't want to run kvm at all, I'm looking to see what
I broke, since nbd doesn't work, either.

I'm collecting OOPS now, will forward when I have a few more.

> So as long as the generic concerns above are under control, I'll happily
> try something like this if it can be merged early in a merge window..
>
> Linus


--
Bill Davidsen <davidsen@tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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