From: Grant Grundler <grundler@puffin.external.hp.com>
To: thunder7@xs4all.nl
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Linux/PA-RISC speed (was Re: C240 Graphics, 64bit kernel and more)
Date: Fri, 16 Nov 2001 00:00:16 -0700 [thread overview]
Message-ID: <200111160700.AAA18727@puffin.external.hp.com> (raw)
In-Reply-To: Message from Jurriaan on Alpha <thunder7@xs4all.nl> of "Fri, 16 Nov 2001 07:34:18 +0100." <20011116073418.A15527@alpha.of.nowhere>
Jurriaan on Alpha wrote:
> The results are shocking; the C200+ is twice as slow, and uses 3 times as
> much system time.
I'm not surprised by the result.
1) We've done nearly zero tuning kernel. Alpha port is much more mature.
2) gcc is poorly tuned for hppa as well.
ie compare perf of gcc vs acc on HPUX. Up to 2x difference in some cases.
3) gcc is int intensive. Ie clock speed matters more and the alpha
has 2.5x advantage here.
grant
next prev parent reply other threads:[~2001-11-16 7:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-15 14:08 [parisc-linux] Linux/PA-RISC speed (was Re: C240 Graphics, 64bit kernel and more) Markus Grabert
2001-11-15 15:51 ` John David Anglin
2001-11-15 16:12 ` Randolph Chung
2001-11-15 18:29 ` Grant Grundler
2001-11-16 6:34 ` Jurriaan on Alpha
2001-11-16 7:00 ` Grant Grundler [this message]
2001-11-16 10:10 ` Alan Cox
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