Re: WimMark I report for 2.5.69

Joel Becker (Joel.Becker@oracle.com)
Wed, 7 May 2003 16:19:20 -0700


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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/