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Message-ID: <497E0047.5080307@hp.com>
Date:	Mon, 26 Jan 2009 10:26:15 -0800
From:	Rick Jones <rick.jones2@...com>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
CC:	Nick Piggin <nickpiggin@...oo.com.au>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Matthew Wilcox <matthew@....cx>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, sfr@...b.auug.org.au,
	matthew.r.wilcox@...el.com, chinang.ma@...el.com,
	linux-kernel@...r.kernel.org, sharad.c.tripathi@...el.com,
	arjan@...ux.intel.com, suresh.b.siddha@...el.com,
	harita.chilukuri@...el.com, douglas.w.styner@...el.com,
	peter.xihong.wang@...el.com, hubert.nueckel@...el.com,
	chris.mason@...cle.com, srostedt@...hat.com,
	linux-scsi@...r.kernel.org, andrew.vasquez@...gic.com,
	anirban.chakraborty@...gic.com
Subject: Re: care and feeding of netperf (Re: Mainline kernel OLTP	performance
 update)

>>To get quick profiles, that form of aggregate netperf is OK - just the one 
>>iteration with background processes using a moderatly long run time.  However, 
>>for result reporting, it is best to (ab)use the confidence intervals 
>>functionality to try to avoid skew errors.
> 
> Yes. My formal testing uses -i 50. I just wanted a quick testing. If I need
> finer-tuning or investigation, I would turn on more options.

Netperf will silently clip that to 30 as that is all the built-in tables know.

> Thanks again. I learned a lot.

Feel free to wander over to netperf-talk over at netperf.org if you want to talk 
some more about the care and feeding of netperf.

happy benchmarking,

rick jones
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