Re: Why does C3 CPU downgrade in kernel 2.4.20?

Daniel Egger (degger@fhm.edu)
10 Dec 2002 08:22:21 +0100


--=-GKAREn4Lr3VK9e5oeToV
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

Am Die, 2002-12-10 um 06.52 schrieb Dave Jones:

> I believe someone (Jeff Garzik?) benchmarked gcc code generation,
> and the C3 executed code scheduled for a 486 faster than it did for
> -m586
> I'm not sure about the alignment flags. I've been meaning to look
> into that myself...

Interesting. I have no clue about which C3 you're talking about here but
a VIA Ezra has all 686 instructions including cmov and thus optimising=20
for PPro works best for me.

Prolly I would have to do more benchmarking to find out about aligment
advantages.

--=20
Servus,
Daniel

--=-GKAREn4Lr3VK9e5oeToV
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: Dies ist ein digital signierter Nachrichtenteil

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQA99ZYschlzsq9KoIYRAndtAJ9pct3xcLKtbycXLfj++luJVMQS7QCff43P
kVPnjxVF7SAr149N5/7Otms=
=BWQQ
-----END PGP SIGNATURE-----

--=-GKAREn4Lr3VK9e5oeToV--

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/