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From: Håvard Bjerke <Havard.Bjerke@idi.ntnu.no>
To: xen-devel@lists.sourceforge.net
Cc: mark.williamson@cl.cam.ac.uk, Rune.Johan.Andresen@idi.ntnu.no
Subject: Re: Xen & I/O in clusters - problems!
Date: Fri, 15 Oct 2004 12:48:42 +0200	[thread overview]
Message-ID: <20041015104841.GD27151@idi.ntnu.no> (raw)

Here are some details on our horrible benchmark results:


System setup:

Ethernet controller: 
	Intel Corp. 82547GI Gigabit Ethernet Controller

Benchmark: 
	PARKBENCH low-level pingpong benchmark comms1_mpi

MPI library: 
	Scali MPI (http://www.scali.com/)

Xen distribution: 
	2.0 stable, downloaded with bitkeeper

Xen configuration: 
	default, i.e. we just leave config-2.6.8.1-xen0 the way it is

CPU: 
	Single Intel(R) Pentium(R) 4 CPU 3.40GHz

Memory: 
	1 GB


Bandwidth measurements:

Between two nodes running plain redhat EL3 with kernel 2.4.21-15.EL:

	786.034 MByte/s

Between two nodes each running only xen domain 0:

	56.480 MByte/s

A graph over the measurements - x = message length, y = time:

	http://www.idi.ntnu.no/~havarbj/tmp/plot.png


Cheers,
Havard


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             reply	other threads:[~2004-10-15 10:48 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-15 10:48 Håvard Bjerke [this message]
2004-10-15 14:02 ` Xen & I/O in clusters - problems! Mark A. Williamson
2004-10-15 16:27   ` Håvard Bjerke
2004-10-16 20:05     ` John Enok Vollestad
  -- strict thread matches above, loose matches on Subject: below --
2004-10-14  8:10 plan 9 status 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

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