linux-kernel - Re: [v6 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER.

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:	Fri, 25 Sep 2009 22:38:51 +0530
From:	Arun R Bharadwaj <arun@...ux.vnet.ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Joel Schopp <jschopp@...tin.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Balbir Singh <balbir@...ibm.com>,
	Gautham R Shenoy <ego@...ibm.com>,
	Shaohua Li <shaohua.li@...el.com>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	Arun Bharadwaj <arun@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [v6 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power
	management code in x86, cleanup drivers/cpuidle/cpuidle.c and
	introduce cpuidle to POWER.

* Arun R Bharadwaj <arun@...ux.vnet.ibm.com> [2009-09-22 16:55:27]:
Hi,

I have done the following experiments and have posted the results
below.


Average of 5 iterations:
------------------------------------------------------------------------------
------------------------------------------------------------------------------

Kernbench make -j16 results on a
16 core x86 machine _with_deep_sleep_ support (C1,C2,C3)


Without the patches applied			With the patches applied


	31.8s						30.4s

------------------------------------------------------------------------------
------------------------------------------------------------------------------


Kernbench make -j8 results on a
8 core x86 machine _without_deep_sleep_ support (only mwait)


Without the patches applied			With the patches applied


	20.2s						20.4s

------------------------------------------------------------------------------
------------------------------------------------------------------------------

Kernbench make -j8 results on a 8 core _dedicated_lpar_pSeries_ machine


Without the patches applied                     With the patches applied


	4m, 37s						4m, 36s

------------------------------------------------------------------------------
------------------------------------------------------------------------------

Please let me know if any other kind of testing is necessary.


Based on the feedback, I will post out the next iteration with a few
minor bug fixes.


thanks,
arun
--
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/