Re: nicksched v30

[Nick Piggin]

Prakash K. Cheemplavam wrote:

> Nick Piggin wrote:
>
> > http://www.kerneltrap.org/~npiggin/v30.gz
> >
> > Applies to kernel 2.6.4-rc1-mm2.
> > Run X at about nice -10 or -15.
> > Please report interactivity problems with the default scheduler
> > before using this one etc etc.
>
>
> So far i noticed:
>
> with default scheduler:
>
> When I run emerge sync (I am on gentoo) and finally the cache on disk 
> gets updated (very heavy disk activity), default scheduler (in 
> conjunction with cfq, haven' tried other) causes a schmall pause of 
> 1-2 seconds when I use my browser, ie mouse cursor is ok, but I cannot 
> scroll for that time.

Probably just reading stuff in.

> your scheduler: I tried it with the "love-sources", so maybe that 
> patch "steel300" incorporated was already a bit outdated, but I dunno. 
> It had the same version as above.  When I click on a link in 
> thunderbird and it opens up in firefox (is started and just a new tab 
> is created) the mouses stutters for a brief moment. This didn't happen 
> with default scheduler. I dunno if above sympton happens with yours.
>
> I haven't reniced X withy our patch. But I did it once and I didn't 
> see much of a difference. (I dunno if the mouse stutter went away 
> then...)

If you don't renice X then it doesn't get any special treatment and
interactivity is generally worse. It makes a very big difference here
when I run X at -15.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/