[ILUG] compiling a kernel in 31 seconds

[Padraig Brady]

nice...
note mingo's scheduler is in 2.5

Padraig.

-------- Original Message --------
Subject: Re: Performance of Ingo's O(1) scheduler on NUMA-Q
Date: Fri, 8 Feb 2002 00:23:51 +0100 (CET)
From: Ingo Molnar <mingo at elte.hu>
Reply-To: <mingo at elte.hu>
To: "Martin J. Bligh" <Martin.Bligh at us.ibm.com>
CC: linux-kernel <linux-kernel at vger.kernel.org>


On Thu, 7 Feb 2002, Martin J. Bligh wrote:

 > Measuring kernel compile times on a 16 way NUMA-Q, adding Ingo's
 > scheduler patch takes kernel compiles down from 47 seconds to 31
 > seconds .... pretty impressive benefit.

cool! By the way, could you try a test-compile with a 'big' .config file?

The reason i'm asking this is that with 31 seconds compiles, the final
link time serialization has a significant effect, which makes the compile
itself less scalable. Adding lots of subsystems to the .config will create
a compilation that takes much longer, but which should also compare the
two schedulers better.

	Ingo