From: Dan Malek <dan@embeddededge.com>
To: "Schaefer-Hutter, Peter" <Peter.Schaefer-Hutter@tfk-racoms.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: 2.4.26 and MPC885 context switching time
Date: Wed, 15 Jun 2005 21:21:56 -0400 [thread overview]
Message-ID: <6b2464f619ef5e336557fea3db91d42a@embeddededge.com> (raw)
In-Reply-To: <8E342283C2100540AAC5D1030970547766F7B1@rcexc.racoms.loc>
On Jun 15, 2005, at 11:43 AM, Schaefer-Hutter, Peter wrote:
> I basically used the two programs from
> http://www.ibm.com/developerworks/linux/library/l-rt9/
That's a fine test, if you run it on various systems and
compare the _relative_ results. There is more than
context switching going on here.
.... there aren't any MMU "problems" with the 8xx, it's
likely to be the most efficient implementation of all
systems that use software to support the MMU. The
processor in general is very sensitive to many system
architecture decisions, especially the system bus
and DRAM configuration. Make certain you really
understand what you have configured and how the
tests you run are affected by that.
Thanks.
-- Dan
next prev parent reply other threads:[~2005-06-16 1:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-15 15:43 2.4.26 and MPC885 context switching time Schaefer-Hutter, Peter
2005-06-16 1:21 ` Dan Malek [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-06-16 14:03 Steven Blakeslee
2005-06-15 17:04 Andrew Williams
2005-06-15 14:55 Schaefer-Hutter, Peter
2005-06-15 15:13 ` Mark Chambers
2005-06-15 20:04 ` Jaap-Jan Boor
2005-06-15 23:38 ` Wolfgang Denk
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=6b2464f619ef5e336557fea3db91d42a@embeddededge.com \
--to=dan@embeddededge.com \
--cc=Peter.Schaefer-Hutter@tfk-racoms.com \
--cc=linuxppc-embedded@ozlabs.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).