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SubjectRe: WimMark I report for 2.5.69
On Wed, May 07, 2003 at 03:41:50PM -0700, Andrew Morton wrote:
> > Runs: 1462.17 1005.78 1995.99
> > ...
> > This benchmark is sensitive to random system events.
>
> You can say that again.
>
> We need to understand why there is such variation. If we can do that,
> then perhaps we can make those 1.0's and 1.5's go away.

Some kernels run very very even. Others do not. I suspect that
certain kernel behaviors and changes exacerbate the issues.

> Is that a thing you can work on? One approach would be to vary parameters
> (filesystem type, amount of memory, TCQ lengths, workload, whatever) and
> see which ones the throughput is sensitive to.

I can try. I'm currently trying to catch up to the
state-of-the-penguin, as I also have some test patches from Nick to run.
These runs take a while, and I've been busy as well.

Joel

--

"Any man who is under 30, and is not a liberal, has not heart;
and any man who is over 30, and is not a conservative, has no brains."
- Sir Winston Churchill

Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
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