From: Linus Torvalds <torvalds@transmeta.com>
To: jmorris@intercode.com.au, linux-kernel@vger.kernel.org
Subject: Re: Performance issue in 2.5.32+
Date: Sun, 8 Sep 2002 08:45:26 -0700 [thread overview]
Message-ID: <200209081545.g88FjQZ10714@penguin.transmeta.com> (raw)
In-Reply-To: <Mutt.LNX.4.44.0209082131140.20784-100000@blackbird.intercode.com.au>
This looks ridiculous, a 1000 us latency is one millisecond, which would
seem to imply that something is getting synchronized with the timer
interrupt for some reason.
You also have a few other outliers (TCP latency and file delete), AND
your memory performance also went down a lot.
Quite frankly, the memory performance thing has nothing to do with the
OS, so there's something else going on on your machine. That "something
else" may be some process that is constantly running one one CPU or
something.
Maybe something got confused by the kernel change, and is now getting
stuck in the background?
Linus
next prev parent reply other threads:[~2002-09-08 15:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-08 11:46 James Morris
2002-09-08 11:57 ` Andi Kleen
2002-09-08 12:55 ` James Morris
2002-09-08 15:45 ` Linus Torvalds [this message]
2002-09-08 17:40 ` James Morris
2002-09-08 18:09 ` Linus Torvalds
2002-09-09 16:06 ` James Morris
2002-09-08 13:19 rwhron
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=200209081545.g88FjQZ10714@penguin.transmeta.com \
--to=torvalds@transmeta.com \
--cc=jmorris@intercode.com.au \
--cc=linux-kernel@vger.kernel.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
all inboxes | Powered by JetHome®