Re: CFQ IO scheduler patch series - AIM7 DBase results on a 16-way IA64
From: Jens Axboe
Date: Mon Apr 30 2007 - 08:32:30 EST
On Mon, Apr 30 2007, Alan D. Brunelle wrote:
> The results from a single run of an AIM7 DBase load on a 16-way ia64 box
> (64GB RAM + 144 FC disks) showed a slight regression (~0.5%) by adding
> in this patch. (Graph can be found at
> http://free.linux.hp.com/~adb/cfq/cfq_dbase.png ) It is only a single
> set of runs, on a single platform, but it is something to keep an eye on
> as the regression showed itself across the complete run.
Do you know if this regression is due to worse IO performance, or
increased system CPU usage?
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