Re: [BENCHMARK] I/O regression after 2.6.0-test5

[Nick Piggin]

Hi Guys,
If you have time, would you please try testing as-iosched.c from
test5 in a later kernel (it won't go into test8-mm1 though).

Thanks


venom@xxxxxx wrote:

> me too, on some self made db benchs on both mysql and postgresql,  testing, of
> course, I/O.
>
> On Sun, 19 Oct 2003, Dave Olien wrote:
>
>
> > Date: Sun, 19 Oct 2003 21:51:23 -0700
> > From: Dave Olien <dmo@xxxxxxxx>
> > To: rwhron@xxxxxxxxxxxxx
> > Cc: linux-kernel@xxxxxxxxxxxxxxx, akpm@xxxxxxxx
> > Subject: Re: [BENCHMARK] I/O regression after 2.6.0-test5
> >
> >
> > Yup, we've seen similar regression on tiobench and reaim workloads.
> >
> > On Sun, Oct 19, 2003 at 08:37:45PM -0400, rwhron@xxxxxxxxxxxxx wrote:
> >
> > > There was about a 50% regression in jobs/minute in AIM7
> > > database workload on quad P3 Xeon.  The CPU time has not
> > > gone up, so the extra run time is coming from something
> > > else.  (I/O or I/O scheduler?)
> > >
> > > tiobench sequential reads has a significant regression too.
> > >
> > > Regression appears unrelated to filesystem type.
> > >
> > > dbench was not affected.
> > >
> > > The AIM7 was run on ext2.
> > >
> > >      

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