From: Larry McVoy <lm@bitmover.com>
To: Justin Piszcz <war@starband.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: gcc-2.95.3 vs gcc-3.0.4
Date: Fri, 22 Feb 2002 20:44:56 -0800 [thread overview]
Message-ID: <20020222204456.O11156@work.bitmover.com> (raw)
In-Reply-To: <3C771D29.942A07C2@starband.net>
In-Reply-To: <3C771D29.942A07C2@starband.net>; from war@starband.net on Fri, Feb 22, 2002 at 11:40:09PM -0500
Try 2.72, it's almost twice as fast as 2.95 for builds. For BK, at least,
we don't see any benefit from the slower compiler, the code runs the same
either way.
On Fri, Feb 22, 2002 at 11:40:09PM -0500, Justin Piszcz wrote:
> Wow, not sure if anyone here has done any benchmarks, but look at these
> build times:
> Kernel 2.4.17 did compile with 3.0.4, just much much slower than 2.95.3
> however.
>
> GCC 2.95.3
> Boot sector 512 bytes.
> Setup is 2628 bytes.
> System is 899 kB
> make[1]: Leaving directory `/usr/src/linux-2.4.17/arch/i386/boot'
> 287.28user 23.99system 5:15.81elapsed 98%CPU (0avgtext+0avgdata
> 0maxresident)k
> 0inputs+0outputs (514864major+684661minor)pagefaults 0swaps
>
> GCC 3.0.4
> Boot sector 512 bytes.
> Setup is 2628 bytes.
> System is 962 kB
> warning: kernel is too big for standalone boot from floppy
> make[1]: Leaving directory `/usr/src/linux-2.4.17/arch/i386/boot'
> 406.87user 28.38system 7:23.68elapsed 98%CPU (0avgtext+0avgdata
> 0maxresident)k
> 0inputs+0outputs (546562major+989237minor)pagefaults 0swaps
>
>
> -
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--
---
Larry McVoy lm at bitmover.com http://www.bitmover.com/lm
next prev parent reply other threads:[~2002-02-23 4:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-23 4:40 gcc-2.95.3 vs gcc-3.0.4 Justin Piszcz
2002-02-23 4:44 ` Larry McVoy [this message]
2002-02-23 5:13 ` Justin Piszcz
2002-02-23 5:22 ` Andrew Morton
2002-02-23 5:50 ` Richard Gooch
2002-02-23 10:31 ` Benny Sjostrand
2002-02-23 15:00 ` Martin Dalecki
2002-02-25 8:07 ` Simon Kirby
2002-02-25 8:15 ` David S. Miller
2002-02-25 8:32 ` David Rees
2002-02-25 9:32 ` Ian Castle
2002-02-25 9:52 ` Markus Schaber
2002-02-23 5:40 ` hugang
2002-02-23 5:56 ` Andrew Morton
2002-02-23 9:25 ` Paul G. Allen
2002-02-23 13:55 ` gmack
2002-02-23 15:43 ` bert hubert
2002-02-25 0:07 ` Luigi Genoni
2002-02-25 0:32 ` ANN: syscalltrack v0.7 released guy keren
2002-02-25 7:48 ` gcc-2.95.3 vs gcc-3.0.4 Jakub Jelinek
2002-02-25 9:46 ` Luigi Genoni
2002-02-25 9:59 ` Jakub Jelinek
2002-02-25 12:55 ` Jan Hubicka
2002-02-25 16:08 ` Juan Quintela
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