From: Herbert Poetzl <herbert@13thfloor.at>
To: Con Kolivas <kernel@kolivas.org>
Cc: Patrick Mau <mau@oscar.ping.de>, Andrew Morton <akpm@osdl.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Workaround for wrapping loadaverage
Date: Wed, 10 Nov 2004 07:20:59 +0100 [thread overview]
Message-ID: <20041110062059.GA20467@mail.13thfloor.at> (raw)
In-Reply-To: <41913B75.1050500@kolivas.org>
On Wed, Nov 10, 2004 at 08:49:41AM +1100, Con Kolivas wrote:
> Herbert Poetzl wrote:
> >but I agree that a higher resolution would be a good
> >idea ... also doing the calculation when the number
> >of running/uninterruptible processes has changed would
> >be a good idea ...
>
> This could get very expensive. A modern cpu can do about 700,000 context
> switches per second of a real task with the current linux kernel so I'd
> suggest not doing this.
hmm, right it can, do you have any stats about the
'typical' workload behaviour?
do you know the average time between changes of
nr_running and nr_uninterruptible?
TIA,
Herbert
> Cheers,
> Con
next prev parent reply other threads:[~2004-11-10 6:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-08 0:19 Workaround for wrapping loadaverage Patrick Mau
2004-11-08 9:27 ` Andrew Morton
2004-11-08 10:25 ` Patrick Mau
2004-11-08 23:50 ` Andrew Morton
2004-11-09 0:43 ` Patrick Mau
2004-11-09 18:51 ` Herbert Poetzl
2004-11-09 21:49 ` Con Kolivas
2004-11-10 6:20 ` Herbert Poetzl [this message]
2004-11-10 9:57 ` Con Kolivas
2004-11-10 7:07 ` Nick Piggin
2004-11-10 23:31 ` Herbert Poetzl
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=20041110062059.GA20467@mail.13thfloor.at \
--to=herbert@13thfloor.at \
--cc=akpm@osdl.org \
--cc=kernel@kolivas.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mau@oscar.ping.de \
/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.