linux-kernel - Re: Building the kernel on an SMP box?

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Message-ID: <44C96208.1060609@tmr.com>
Date:	Thu, 27 Jul 2006 21:02:00 -0400
From:	Bill Davidsen <davidsen@....com>
To:	"Brian D. McGrew" <brian@...ionpro.com>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Building the kernel on an SMP box?

Brian D. McGrew wrote:
> Good morning all!
> 
> Currently I'm building my kernels on a Dell PE 1800 3.0GHz.  My dilemma
> is that I build and rebuild the kernel about twenty times a day and even
> though it only takes about 20 minutes, that's rapidly becoming too slow!
> Today it's the 2.6.17 kernel on FC5 that I'm building with.
> 
> I see all these blurbs out there about someone being able to build a
> complete kernel in under a minute or running an SMP build across
> multiple CPUS and/or multiple machines.
> 
> So, to ask the group that should know the best ... What would be a
> reasonable configuration to get my builds down under five minutes or so?
> And then to go to the extreme, what kind of horsepower should I be
> looking for if I want get the build times down to say a minute or so???

I can just about make it on 2xXeons at 3.0GHz, HT enabled, 4GB RAM. But 
the new "Core 2 Duo" stuff is tons faster, is dual core but no HT yet, 
has better cache, faster memory bus... costs more. Some big NUMA 
hardware after that,

I will guess the new cheap point is o/c Core 2 Duo 6700, and will finish 
in about 7 min. Patience is a virtue.

-- 
Bill Davidsen <davidsen@....com>
   Obscure bug of 2004: BASH BUFFER OVERFLOW - if bash is being run by a
normal user and is setuid root, with the "vi" line edit mode selected,
and the character set is "big5," an off-by-one errors occurs during
wildcard (glob) expansion.
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