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Subject: Re: Intel P6 vs P7 system call performance
From: GrandMasterLee <masterlee@digitalroadkill.net>
To: Dave Jones <davej@codemonkey.org.uk>
Cc: Mike Dresser <mdresser_l@windsormachine.com>, linux-kernel@vger.kernel.org
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On Sat, 2002-12-14 at 04:01, Dave Jones wrote:
> On Fri, Dec 13, 2002 at 11:53:51PM -0500, Mike Dresser wrote:
>  > On Fri, 13 Dec 2002, Mike Dresser wrote:
>  > 
>  > > The single P4/2.53 in another machine can haul down in 3m17s
>  > >
>  > Amend that to 2m19s, forgot to kill a background backup that was moving
>  > files around at about 20 meg a second.



> Note that there are more factors at play than raw cpu speed in a
> kernel compile. Your time here is slightly faster than my 2.8Ghz P4-HT for
> example.  My guess is you have faster disk(s) than I do, as most of
> the time mine seems to be waiting for something to do.

An easy way to level the playing field would be to use /dev/shm to build
your kernel in. That way it's all in memory. If you've got a maching
with 512M, then it's easily accomplished.

> *note also that this is compiling stock 2.4.20 with default configuration.
> The minute you change any options, we're comparings apples to oranges.
> 
> 		Dave
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