Is it possible to make Fedora load faster?
Dave Jones
davej at redhat.com
Mon Apr 4 15:25:41 UTC 2005
On Mon, Apr 04, 2005 at 10:54:48AM +0200, Arjan van de Ven wrote:
> On Mon, 2005-04-04 at 04:42 -0400, Alan Cox wrote:
> > On Sun, Apr 03, 2005 at 09:05:37PM -0400, Richard Hally wrote:
> > > are you saying that Fedora is unsuitable for ordinary desktops and (by
> > > extension laptops) unless they have scsi?
> >
> > I think some people would prefer to say that "PC's are unsuitable for use
> > without real disks" 8)
> >
> > In this case the fact that it is I/O not CPU means the requirements to quieten
> > such an app are really not handled by nice(2)
>
> also note that the cfq io scheduler makes updatedb and friends a lot
> more bareable. CFQ is default in our kernel, but not in kernel.org
> kernels, so if the "2.6 is bad with updatedb" notion is based on
> kernel.org kernels then I strongly suggest switching those to CFQ.
This broke a while back when I rebased, and I forgot to fix it up
until last weekend. The next build has it fixed again.
> Also note that both upstream and our kernels are currently missing the
> "fix" for updatedb eating your VM that was present in earlier fedora
> kernels:
>
> http://people.redhat.com/arjanv/linux-2.6.5-inode-clip.patch
I think you already know my opinion on this patch judging by the
quotes on your "fix" :) I imagine upstream probably wouldn't be
too keen on it either. I'm not clear on what the right fix is
however. OTOH, posting a horrible patch sometimes has the nice
effect of getting those who know this stuff intimately working on
fixing the problem properly :)
Dave
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