From: Pavel Machek <pavel@suse.cz>
To: Jens Axboe <axboe@suse.de>
Cc: Hua Zhong <hzhong@gmail.com>,
linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: [PATCH] likely cleanup: revert unlikely in ll_back_merge_fn
Date: Sun, 30 Apr 2006 19:25:03 +0000 [thread overview]
Message-ID: <20060430192503.GE4452@ucw.cz> (raw)
In-Reply-To: <20060425183026.GR4102@suse.de>
On Tue 25-04-06 20:30:26, Jens Axboe wrote:
> On Tue, Apr 25 2006, Hua Zhong wrote:
> > With likely/unlikely profiling (see the recent patch dwalker@mvista.com
> > sent), on my not-so-busy-typical-development system it shows more than
> > 80K misses and no hits. So I guess it makes sense to revert.
> >
> > I don't know BIO code very well, but I hope this data is useful for the
> > experts.
>
> Well you'd want to optimize for the busy case, right, no point in
> optimizing for a more idle system.
Careful here... for battery-powered systems you may want to optimize
for idle system...
Pavel
--
Thanks, Sharp!
prev parent reply other threads:[~2006-05-01 20:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-25 18:18 [PATCH] likely cleanup: revert unlikely in ll_back_merge_fn Hua Zhong
2006-04-25 18:30 ` Jens Axboe
2006-04-25 21:38 ` Hua Zhong
2006-04-26 5:20 ` Jens Axboe
2006-04-26 13:50 ` James Bottomley
2006-04-26 13:55 ` Jens Axboe
2006-04-26 14:24 ` James Bottomley
2006-04-27 14:39 ` Jens Axboe
2006-04-26 17:06 ` Hua Zhong
2006-04-30 19:25 ` Pavel Machek [this message]
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=20060430192503.GE4452@ucw.cz \
--to=pavel@suse.cz \
--cc=akpm@osdl.org \
--cc=axboe@suse.de \
--cc=hzhong@gmail.com \
--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