From: "Joakim Tjernlund" <Joakim.Tjernlund@lumentis.se>
To: <linuxppc-dev@lists.linuxppc.org>
Cc: <drow@false.org>
Subject: Re: Improved copy_page() function, about 30% speed up for mpc860!
Date: Sun, 2 Mar 2003 18:50:01 +0100 [thread overview]
Message-ID: <005401c2e0e4$27a1b6b0$020120b0@jockeXP> (raw)
> > > I can't tell you what revs they were, but all of the MPC860's I could
> > > get my hands on here the last time I tried to use dcbz on them were
> > > faulty. You may just not be triggering the bug.
> >
> > hmm, what boards was this?
> > I am planning to a larger test here with all our custom mpc860 and mpc862 boards. We have them in
> > 100, 80 and 50 MHZ variants.
> >
> > May be the bug is related to board design? Is there an official errata from Motorla
> > regarding this bug? I can't find any.
> >
> > Anyhow I had a flaw in my testprogram, so you can throw this version of copy_page() away.
> > But enabling the use of dcbz in the current version still gives me 30%+ performance increase.
> >
> > See the embedded list for details.
> >
> > Jocke
I found a link that may have relevance regarding the dcbz problem , can anybody confirm this?
http://www.uwsg.iu.edu/hypermail/linux/kernel/0012.0/0529.html
Jocke
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next reply other threads:[~2003-03-02 17:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-02 17:50 Joakim Tjernlund [this message]
2003-03-03 21:18 ` Improved copy_page() function, about 30% speed up for mpc860! Dan Malek
2003-03-03 23:16 ` Joakim Tjernlund
2003-03-04 0:43 ` Dan Malek
2003-03-04 0:54 ` Daniel Jacobowitz
2003-03-04 3:38 ` Dan Malek
2003-03-04 8:29 ` Joakim Tjernlund
2003-03-04 13:33 ` Dan Malek
2003-03-04 15:24 ` Joakim Tjernlund
2003-03-04 17:00 ` Dan Malek
2003-03-04 22:01 ` Joakim Tjernlund
2003-03-04 22:41 ` Dan Malek
2003-03-04 23:20 ` Joakim Tjernlund
2003-03-04 23:35 ` Tom Rini
2003-03-04 23:45 ` Joakim Tjernlund
2003-03-05 0:05 ` Tom Rini
2003-03-05 0:19 ` Joakim Tjernlund
2003-03-05 17:12 ` Tom Rini
2003-03-05 17:50 ` Joakim Tjernlund
2003-03-05 17:15 ` Dan Malek
[not found] ` <1046737789.885.15.camel@zion.wanadoo.fr>
2003-03-04 0:51 ` Dan Malek
-- strict thread matches above, loose matches on Subject: below --
2003-02-27 13:08 Joakim Tjernlund
2003-02-27 15:45 ` Joakim Tjernlund
2003-02-28 17:31 ` Joakim Tjernlund
2003-03-03 21:28 ` Dan Malek
2003-03-04 0:09 ` Joakim Tjernlund
2003-03-04 0:19 ` Paul Mackerras
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='005401c2e0e4$27a1b6b0$020120b0@jockeXP' \
--to=joakim.tjernlund@lumentis.se \
--cc=drow@false.org \
--cc=linuxppc-dev@lists.linuxppc.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).