From: Juan Quintela <quintela@mandrakesoft.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: 25 Feb 2002 17:08:42 +0100 [thread overview]
Message-ID: <m2n0xxo86t.fsf@localhost.mandrakesoft.com> (raw)
In-Reply-To: <3C771D29.942A07C2@starband.net>
In-Reply-To: <3C771D29.942A07C2@starband.net>
>>>>> "justin" == Justin Piszcz <war@starband.net> writes:
justin> Wow, not sure if anyone here has done any benchmarks, but look at these
justin> build times:
justin> Kernel 2.4.17 did compile with 3.0.4, just much much slower than 2.95.3
justin> however.
justin> GCC 2.95.3
justin> Boot sector 512 bytes.
justin> Setup is 2628 bytes.
justin> System is 899 kB
justin> make[1]: Leaving directory `/usr/src/linux-2.4.17/arch/i386/boot'
justin> 287.28user 23.99system 5:15.81elapsed 98%CPU (0avgtext+0avgdata
justin> 0maxresident)k
justin> 0inputs+0outputs (514864major+684661minor)pagefaults 0swaps
justin> GCC 3.0.4
justin> Boot sector 512 bytes.
justin> Setup is 2628 bytes.
justin> System is 962 kB
justin> warning: kernel is too big for standalone boot from floppy
justin> make[1]: Leaving directory `/usr/src/linux-2.4.17/arch/i386/boot'
justin> 406.87user 28.38system 7:23.68elapsed 98%CPU (0avgtext+0avgdata
justin> 0maxresident)k
justin> 0inputs+0outputs (546562major+989237minor)pagefaults 0swaps
Hi, here the times chaned with the lastest 3.0.4, this is the first
3.0 compiler that is faster than 2.96 here. Compilation of a mdk
kernel (i.e. a kernel with everthing as modules).
(I compiled twice with both compilers & there are not variances).
2.96
2018.76user 159.29system 18:13.20elapsed 199%CPU (0avgtext+0avgdata 0maxresident
)k
0inputs+0outputs (4007797major+8765072minor)pagefaults 0swaps
gcc-3.0.4
1797.23user 133.06system 16:07.98elapsed 199%CPU (0avgtext+0avgdata 0maxresident
)k
0inputs+0outputs (3569637major+8775450minor)pagefaults 0swaps
And the size differences are not as big as they used to be:
root$ ls -l vmlinux*
-rwxr-xr-x 1 root root 3177771 Feb 24 18:06 vmlinux*
-rwxr-xr-x 1 root root 3206468 Feb 24 17:47 vmlinux-3.0.4*
root$ size vmlinux*
text data bss dec hex filename
2253010 301448 423008 2977466 2d6eba vmlinux
2294630 304924 423008 3022562 2e1ee2 vmlinux-3.0.4
Until now, gcc-3.0 binaryes tend to be quite bigger than gcc-2.96.
root$ rpm -qa | grep gcc | grep -v cpp
gcc-2.96-0.76mdk
libgcc3.0-3.0.4-1mdk
gcc3.0-3.0.4-1mdk
Later, Juan.
--
In theory, practice and theory are the same, but in practice they
are different -- Larry McVoy
prev parent reply other threads:[~2002-02-25 16:19 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
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 [this message]
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