linux-kernel - Re: CFQ IO scheduler patch series - AIM7 DBase results on a 16-way IA64

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 30 Apr 2007 14:27:53 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	"Alan D. Brunelle" <Alan.Brunelle@...com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: CFQ IO scheduler patch series - AIM7 DBase results on a 16-way IA64

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?

-- 
Jens Axboe

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