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

[Dave Olien]

test5 didn't work with dbt2.  The database run kept hanging.
I've been running reaim, which doesn't have those problems with
older kernels, but has shown similar performance problems.

I need to also check again that reaim and dbt2 still show similar
performance issues with newer kernel versions.

I've lost my test machine for today.  But I'll try test5 as-iosched
in a test8 kernel with reaim tomorrow.  If it works well, I'll try your
following patch.  Probably get it in the mail tomorrow afternoon.

Dave

On Thu, Oct 23, 2003 at 12:24:09PM +1000, Nick Piggin wrote:
> 
> 
> Dave Olien wrote:
> 
> >Sorry, this patch didn't fix our performance problems.  Mary just
> >finished running dbt2 on test8 with your patch:
> >
> >NOTPM   kernel          scheduler
> >965     2.6.0-test8-np  AS
> >1632    2.6.-test6-mm4  deadline
> >
> 
> Thanks. hmm.
> And NOTPM was better with AS in test5? Does using as-iosched.c from test5
> in a test8 kernel help?
> 
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