From: Håvard Bjerke <Havard.Bjerke@idi.ntnu.no>
To: Ian Pratt <Ian.Pratt@cl.cam.ac.uk>
Cc: =?unknown-8bit?Q?H=E5vard?= Bjerke <Havard.Bjerke@idi.ntnu.no>,
Rune.Johan.Andresen@idi.ntnu.no, xen-devel@lists.sourceforge.net
Subject: Re: Xen & I/O in clusters - problems! New Information
Date: Thu, 28 Oct 2004 18:45:16 +0200 [thread overview]
Message-ID: <20041028164515.GP23334@idi.ntnu.no> (raw)
In-Reply-To: <E1CN9e0-0000hk-00@mta1.cl.cam.ac.uk>
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=unknown-8bit, Size: 1806 bytes --]
On Thu, Oct 28, 2004 at 01:44:44PM +0100, Ian Pratt wrote:
>
> Please can you try Xen/linux 2.6.9. Also, please can you remind
> me of the spec of your machines.
>
Specs:
Ethernet controller: Intel Corp. 82547GI Gigabit Ethernet Controller
CPU: Intel(R) Pentium(R) 4 CPU 3.40GHz single cpu
RAM: 1 GB
The previous results from 2.4.27 are (I wrote kB/s earlier but that was wrong):
Native:
130k interrupts
114 MB/s
Xen0:
180k interrupts
80 MB/s
New results with 2.6.9:
Native:
bandwidth: 2048000000 bytes in 17.42 real seconds = 114794.42 KB/sec
CPU: 0.0user 1.4sys 0:17real 8%
interrupts: 135k
Xen0:
bandwidth: 2048000000 bytes in 21.77 real seconds = 91885.76 KB/sec
CPU: 0.0user 16.2sys 0:21real 74%
interrupts: 107k
I also tried sending localhost-localhost in 2.4.27, and interestingly Native performed 7:1 times better than xen0:
Native:
bandwidth: 2048000000 bytes in 2.70 real seconds = 741704.96 KB/sec
CPU: 0.0user 1.6sys 0:02real 62%
Xen0:
bandwidth: 2048000000 bytes in 17.12 real seconds = 116838.03 KB/sec
CPU: 5.9user 0.0sys 0:17real 34%
We've also recently benchmarked in an SMP cluster and achieved satisfying results, ie. around 114 MB/s with both Native and Xen0. But we're still wondering why we're not achieving full speed in a single-cpu cluster.
Håvard
-------------------------------------------------------
This Newsletter Sponsored by: Macrovision
For reliable Linux application installations, use the industry's leading
setup authoring tool, InstallShield X. Learn more and evaluate
today. http://clk.atdmt.com/MSI/go/ins0030000001msi/direct/01/
next prev parent reply other threads:[~2004-10-28 16:45 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-13 5:12 plan 9 status Ronald G. Minnich
2004-10-13 12:14 ` Mark A. Williamson
2004-10-13 22:18 ` Ronald G. Minnich
2004-10-14 0:52 ` Kip Macy
2004-10-14 8:10 ` Keir Fraser
2004-10-14 10:35 ` Wesley Parish
2004-10-14 11:04 ` Keir Fraser
2004-10-14 15:32 ` Ronald G. Minnich
2004-10-14 15:57 ` Keir Fraser
2004-10-21 16:06 ` Keir Fraser
2004-10-14 15:53 ` Mark A. Williamson
2004-10-14 17:45 ` Xen & I/O in clusters - problems! Rune Johan Andresen
2004-10-14 18:17 ` Ian Pratt
2004-10-14 23:24 ` Mark A. Williamson
2004-10-15 13:48 ` Rune Johan Andresen
2004-10-21 19:12 ` Xen & I/O in clusters - problems! New Information Rune Johan Andresen
2004-10-21 20:24 ` Ian Pratt
2004-10-22 16:36 ` Rune Johan Andresen
2004-10-22 17:47 ` Ian Pratt
2004-10-27 17:11 ` Håvard Bjerke
2004-10-27 18:26 ` Ian Pratt
2004-10-27 18:40 ` Mark A. Williamson
2004-10-28 11:51 ` Håvard Bjerke
2004-10-28 13:09 ` Mark A. Williamson
2004-10-28 11:32 ` Håvard Bjerke
2004-10-28 12:44 ` Ian Pratt
2004-10-28 16:45 ` Håvard Bjerke [this message]
2004-10-29 17:05 ` Xen & I/O in clusters - Single Vs. Dual CPU issue Rune Johan Andresen
2004-10-29 17:24 ` Ian Pratt
2004-10-29 18:39 ` Håvard Bjerke
2004-10-29 19:46 ` Ian Pratt
2004-11-02 16:13 ` Håvard Bjerke
2004-11-02 16:35 ` Mark A. Williamson
2004-11-02 16:51 ` Mark A. Williamson
2004-11-04 17:42 ` Rune Johan Andresen
2004-11-04 18:41 ` Bin Ren
2004-11-05 14:53 ` Rune Johan Andresen
2004-11-05 16:47 ` Keir Fraser
2004-11-05 17:33 ` Rune Johan Andresen
2004-11-06 8:04 ` Keir Fraser
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=20041028164515.GP23334@idi.ntnu.no \
--to=havard.bjerke@idi.ntnu.no \
--cc=Ian.Pratt@cl.cam.ac.uk \
--cc=Rune.Johan.Andresen@idi.ntnu.no \
--cc=xen-devel@lists.sourceforge.net \
/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.