[CentOS] Adding RAM

Peter Kjellstrom cap at nsc.liu.se
Tue Dec 9 08:30:01 UTC 2008


On Tuesday 09 December 2008, Ross Walker wrote:
> On Dec 8, 2008, at 6:51 PM, Matt <lm7812 at gmail.com> wrote:
...
> >> Try setting the scheduler to 'deadline' and see if the queue sizes
> >> shrink.
> >
> > I have googled this and having a bit of trouble figuring how to change
> > it under CentOS 4.
> >
> > http://www.wlug.org.nz/LinuxIoScheduler
> >
> > Does not seem to work on CentOS 4.
> >
> >> No raid1? Besides adding redundancy, it can help with read
> >> performance. I would probably put the mail on a raid 10 though if I
> >> had 4 disks to do so.
> >
> > I plan on moving to faster disks and RAID 1 down the road.  Just has
> > not happened yet.
>
> Setting scheduler is global in C4 it can be set as a kernel option
> with a scheduler=deadline in grub.

Is that an alias for "elevator=deadline" (which I know works)?

/Peter
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