From: James Cloos <cloos@jhcloos.com>
To: linux-kernel@vger.kernel.org
Cc: david@gibson.dropbear.id.au, Andrew Morton <akpm@osdl.org>
Subject: Re: MAP_SHARED bizarrely slow
Date: Wed, 27 Oct 2004 01:30:10 -0700 [thread overview]
Message-ID: <m3lldsimwd.fsf@lugabout.cloos.reno.nv.us> (raw)
In-Reply-To: <20041027010659.15ec7e90.akpm@osdl.org> (Andrew Morton's message of "Wed, 27 Oct 2004 01:06:59 -0700")
>>>>> "Andrew" == Andrew Morton <akpm@osdl.org> writes:
JimC> Both took about 11 seconds for the private and around 30 seconds
JimC> for the shared tests.
Andrew> I get the exact opposite, on a P4:
Interesting. I gave it a try on a couple of my UMLs. One is on a P4
(possibly xeon; not sure) and the other is on an athlon. The p4 did
shared about twice as fast as private and the athlon was 50% faster.
(p4 uses uml kernel 2.4.27; athlon 2.6.6; no idea what the hosts run.)
-JimC
next prev parent reply other threads:[~2004-10-27 8:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-27 6:45 David Gibson
2004-10-27 7:23 ` James Cloos
2004-10-27 7:59 ` David Gibson
2004-10-28 4:38 ` Ian Wienand
2004-10-27 8:06 ` Andrew Morton
2004-10-27 8:20 ` David Gibson
2004-10-27 8:30 ` James Cloos [this message]
2004-10-27 20:54 ` Bill Davidsen
2004-10-28 1:16 ` David Gibson
2004-10-28 5:54 ` dean gaudet
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=m3lldsimwd.fsf@lugabout.cloos.reno.nv.us \
--to=cloos@jhcloos.com \
--cc=akpm@osdl.org \
--cc=david@gibson.dropbear.id.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®