linux-kernel - Re: [intel_pstate] fcb6a15c: -34.4% aim7 jobs-per-min and -17.0% will-it-scale/page_fault1 Pkg

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] [day] [month] [year] [list]

Date:	Mon, 10 Feb 2014 07:54:17 -0800
From:	Dirk Brandewie <dirk.brandewie@...il.com>
To:	Fengguang Wu <fengguang.wu@...el.com>
CC:	dirk.j.brandewie@...el.com,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [intel_pstate] fcb6a15c: -34.4% aim7 jobs-per-min and -17.0%
 will-it-scale/page_fault1 Pkg_W

On 02/07/2014 04:33 AM, Fengguang Wu wrote:
> Hi Dirk,
>
> FYI, we notice dropped power and performance numbers on commit
> fcb6a15c2e7e76d493e6f91ea889ab40e1c643a4 ("intel_pstate: Take core C0
> time into account for core busy calculation").
>
>
>        v3.14-rc1  fcb6a15c2e7e76d493e6f91ea
> ---------------  -------------------------
>        6.53 ~ 4%     -12.0%       5.75 ~ 2%  lkp-sb03/micro/netperf/120s-200%-SCTP_STREAM
>      147.93 ~ 0%     -23.3%     113.40 ~ 0%  lkp-sbx04/micro/will-it-scale/page_fault1
>      154.46 ~ 0%     -22.9%     119.15 ~ 0%  TOTAL turbostat.Cor_W
>
>        v3.14-rc1  fcb6a15c2e7e76d493e6f91ea
> ---------------  -------------------------
>         203 ~ 0%     -17.0%        169 ~ 0%  lkp-sbx04/micro/will-it-scale/page_fault1
>         203 ~ 0%     -17.0%        169 ~ 0%  TOTAL turbostat.Pkg_W
>

These two tests show an improvement in power :-)

>        v3.14-rc1  fcb6a15c2e7e76d493e6f91ea
> ---------------  -------------------------
>      572540 ~ 1%     -30.2%     399351 ~ 1%  grantley/micro/aim7/disk_src
>      317151 ~ 1%     -42.0%     183863 ~ 0%  grantley/micro/aim7/shell_rtns_1
>      889692 ~ 1%     -34.4%     583214 ~ 1%  TOTAL aim7.2000.jobs-per-min
>

I am investigating where the aim benchmark went south.



--
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/