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From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: pgsql-performance@postgresql.org
Subject: Re: Feature Request --- was: PostgreSQL Performance Tuning
Date: Sat, 5 May 2007 11:30:59 +0200
Message-ID: <20070505093059.GD12209@uio.no> (raw)
In-Reply-To: <Pine.GSO.4.64.0705042043550.1981@westnet.com>
References: <OFC96167D5.6BB63AC2-ON652572C9.003B5263-652572C9.003E4142@lntinfotech.com>
	<200705010923.47951.josh@agliodbs.com>
	<Pine.GSO.4.64.0705012154380.24215@westnet.com>
	<200705031221.56226.josh@agliodbs.com>
	<Pine.GSO.4.64.0705032351240.14661@westnet.com>
	<20070504124536.GJ2422@mathom.us>
	<Pine.GSO.4.64.0705042043550.1981@westnet.com>

On Fri, May 04, 2007 at 09:07:53PM -0400, Greg Smith wrote:
> As if I don't know what the bogo stands for, ha!  I brought that up 
> because someone suggested testing CPU speed using some sort of idle loop. 
> That's exactly what bogomips does.

Just for reference (I'm sure you know, but others might not): BogoMIPS are
measured using a busy loop because that's precisely the number the kernel is
interested in -- it's used to know for how long to loop when doing small
delays in the kernel (say, "sleep 20 microseconds"), which is done using a
busy loop.

/* Steinar */
-- 
Homepage: http://www.sesse.net/



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