From: Arjan van de Ven <arjan@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Tobias Doerffel <tobias.doerffel@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>, Willy Tarreau <w@1wt.eu>,
Thomas Gleixner <tglx@linutronix.de>,
Suresh Siddha <suresh.b.siddha@intel.com>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Specific support for Intel Atom architecture
Date: Mon, 4 May 2009 06:32:58 -0700 [thread overview]
Message-ID: <20090504063258.00d035b2@infradead.org> (raw)
In-Reply-To: <20090504131457.GA25844@elte.hu>
On Mon, 4 May 2009 15:14:57 +0200
Ingo Molnar <mingo@elte.hu> wrote:
>
> * Tobias Doerffel <tobias.doerffel@gmail.com> wrote:
>
> > Am Sonntag, 3. Mai 2009 08:48:54 schrieb H. Peter Anvin:
> > > Willy Tarreau wrote:
> > > >> $(call cc-option,-march=atom,-march=i686)
> > > >
> > > > if it's an in-order architecture, wouldn't it be better to tune
> > > > for i386 or i486 instead ?
> > >
> > > Possibly. It would be worth measuring.
> >
> > How would one do that (never benchmarked kernel stuff before)?
>
> A standard method is to run lmbench and compare the results -
> lmbench has a built-in 'report comparison between two runs' feature.
well... you're normally REALLY hard pressed to measure compiler
differences this way.....
normally compiler options get benchmarked using speccpu and the like....
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-05-04 13:31 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-30 12:08 Specific support for Intel Atom architecture Tobias Doerffel
2009-04-30 15:40 ` Ingo Molnar
2009-04-30 17:03 ` H. Peter Anvin
2009-04-30 17:10 ` H. Peter Anvin
2009-05-03 5:38 ` Willy Tarreau
2009-05-03 6:48 ` H. Peter Anvin
2009-05-03 11:08 ` Tobias Doerffel
2009-05-04 13:14 ` Ingo Molnar
2009-05-04 13:32 ` Arjan van de Ven [this message]
2009-05-04 17:55 ` Ingo Molnar
2009-05-03 14:53 ` Arjan van de Ven
2009-05-03 18:30 ` Willy Tarreau
2009-05-03 18:37 ` H. Peter Anvin
2009-05-03 19:38 ` Måns Rullgård
2009-05-04 7:22 ` Andi Kleen
2009-05-11 21:30 ` Tobias Doerffel
2009-05-12 6:53 ` Andi Kleen
2009-05-12 14:20 ` Ulrich Drepper
2009-05-12 15:04 ` Andi Kleen
2009-05-12 17:45 ` Ulrich Drepper
2009-05-12 18:13 ` Andi Kleen
2009-05-14 5:04 ` Harvey Harrison
2009-05-14 13:38 ` Ulrich Drepper
2009-05-14 14:01 ` Andi Kleen
2009-05-14 16:19 ` Ulrich Drepper
2009-05-14 17:29 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090504063258.00d035b2@infradead.org \
--to=arjan@infradead.org \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=suresh.b.siddha@intel.com \
--cc=tglx@linutronix.de \
--cc=tobias.doerffel@gmail.com \
--cc=venkatesh.pallipadi@intel.com \
--cc=w@1wt.eu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.