From: Timothy Covell <timothy.covell@ashavan.org>
To: Rik van Riel <riel@conectiva.com.br>,
Linus Torvalds <torvalds@transmeta.com>
Cc: Benjamin LaHaise <bcrl@redhat.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Davide Libenzi <davidel@xmailserver.org>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Scheduler, Can we save some juice ...
Date: Thu, 20 Dec 2001 00:33:23 -0600 [thread overview]
Message-ID: <200112200637.fBK6b2Sr014173@svr3.applink.net> (raw)
In-Reply-To: <Pine.LNX.4.33L.0112200149330.15741-100000@imladris.surriel.com>
In-Reply-To: <Pine.LNX.4.33L.0112200149330.15741-100000@imladris.surriel.com>
On Wednesday 19 December 2001 21:50, Rik van Riel wrote:
> On Tue, 18 Dec 2001, Linus Torvalds wrote:
> > The thing is, I'm personally very suspicious of the "features for that
> > exclusive 0.1%" mentality.
>
> Then why do we have sendfile(), or that idiotic sys_readahead() ?
>
> (is there _any_ use for sys_readahead() ? at all ?)
>
> cheers,
>
> Rik
OK, here's another 0.1% for you. Considering how Linux SMP
doesn't have high CPU affinity, would it be possible to make a
patch such that the additional CPUs remain in deep sleep/HALT
mode until the first CPU hits a high-water mark of say 90%
utilization? I've started doing this by hand with the (x)pulse
application. My goal is to save electricity and cut down on
excess heat when I'm just browsing the web and not compiling
or seti@home'ing.
--
timothy.covell@ashavan.org.
next prev parent reply other threads:[~2001-12-20 6:38 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.33.0112181508001.3410-100000@penguin.transmeta.com>
2001-12-20 3:50 ` Scheduler ( was: Just a second ) Rik van Riel
2001-12-20 4:04 ` Ryan Cumming
2001-12-20 5:52 ` Linus Torvalds
2001-12-20 6:33 ` Timothy Covell [this message]
2001-12-20 6:50 ` Scheduler, Can we save some juice Ryan Cumming
2001-12-20 6:52 ` Robert Love
2001-12-20 17:39 ` Timothy Covell
2001-12-20 5:39 ` Scheduler ( was: Just a second ) David S. Miller
2001-12-20 5:58 ` Linus Torvalds
2001-12-20 6:01 ` David S. Miller
2001-12-20 22:40 ` Troels Walsted Hansen
2001-12-20 23:55 ` Chris Ricker
2001-12-20 23:59 ` CaT
2001-12-21 0:06 ` Davide Libenzi
2001-12-20 11:29 ` Rik van Riel
2001-12-20 11:34 ` David S. Miller
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=200112200637.fBK6b2Sr014173@svr3.applink.net \
--to=timothy.covell@ashavan.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=bcrl@redhat.com \
--cc=davidel@xmailserver.org \
--cc=linux-kernel@vger.kernel.org \
--cc=riel@conectiva.com.br \
--cc=torvalds@transmeta.com \
/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®