From: Nikita Danilov <nikita@clusterfs.com>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: Linux Kernel Mailing List <Linux-Kernel@vger.kernel.org>,
Andrew Morton <AKPM@Osdl.ORG>,
Linux MM Mailing List <linux-mm@kvack.org>
Subject: Re: [PATCH]: 1/4 batch mark_page_accessed()
Date: Sat, 27 Nov 2004 13:41:58 +0300 [thread overview]
Message-ID: <16808.23030.312384.635657@gargle.gargle.HOWL> (raw)
In-Reply-To: <20041126185833.GA7740@logos.cnet>
Marcelo Tosatti writes:
[...]
>
> Average Half Load -j 4 Run: Average Half Load -j 4 Run:
> Elapsed Time 274.916 Elapsed Time 245.026
> User Time 833.63 User Time 832.34
> System Time 73.704 System Time 73.41
> Percent CPU 335.8 Percent CPU 373.6
> Context Switches 12984.8 Context Switches 13427.4
> Sleeps 21459.2 Sleeps 21642
What is "System Time" here? Does in include CPU consumption by, say,
kswapd? If not, then one may conjecture that mark_page_accessed batching
modifies ordering of pages on zone "LRU" lists in a way that measurably
changes efficiency of VM scanning, and mostly affects process that scans
most---kswapd.
Nikita.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2004-11-27 10:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-21 15:44 Nikita Danilov
2004-11-21 21:12 ` Andrew Morton
2004-11-24 10:40 ` Marcelo Tosatti
2004-11-24 16:32 ` Marcelo Tosatti
2004-11-24 21:53 ` Nikita Danilov
2004-11-26 18:58 ` Marcelo Tosatti
2004-11-27 0:37 ` Nick Piggin
2004-11-30 16:29 ` Marcelo Tosatti
2004-12-01 1:33 ` Andrew Morton
2004-11-30 22:57 ` Marcelo Tosatti
2004-12-01 12:23 ` Nikita Danilov
2004-12-01 18:58 ` Marcelo Tosatti
2004-12-02 1:59 ` Andrew Morton
2004-11-27 10:41 ` Nikita Danilov [this message]
2004-11-27 8:19 ` Marcelo Tosatti
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=16808.23030.312384.635657@gargle.gargle.HOWL \
--to=nikita@clusterfs.com \
--cc=AKPM@Osdl.ORG \
--cc=Linux-Kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=marcelo.tosatti@cyclades.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