Re: WimMark I report for 2.5.69

[Joel Becker]

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: [e-mail]
Phone: [phone]