From: "Ronald G. Minnich" <rminnich@lanl.gov>
To: 9fans@cse.psu.edu
Subject: [9fans] Re: [Xen-devel] performance problems (fwd)
Date: Fri, 4 Feb 2005 08:23:59 -0700 [thread overview]
Message-ID: <Pine.LNX.4.58.0502040823110.14256@enigma.lanl.gov> (raw)
I am sending this as the data is interesting for plan 9 vmware vs. plan 9
xen. Which is to say, I sure would like some people to try xen and plan 9:
- free
- faster
- xen will soon be standard part of linux --> setup will be easy
ron
---------- Forwarded message ----------
Date: Fri, 4 Feb 2005 10:04:23 +0100
From: Henning Glawe <eartoaster@gmx.net>
To: xen-devel@lists.sourceforge.net
Subject: Re: [Xen-devel] performance problems
On Wed, Jan 19, 2005 at 09:02:02PM -0000, Ian Pratt wrote:
>
> I think you're going to have to do a few IO microbenchmarks such as ttcp
> and dd to figure out what's going slow on your system -- something is
> badly wrong. Are you sure the same hardware drivers are being used in
> both cases?
yup. the only difference was that I didn't touch dumU's kernel config; in
dom0 I already disabled the debugging flags (except magic sysreq), but in
default domU's config they were still enabled.
Overall impression from my newer benchmark experiments:
- Harddisk IO is about 30% faster in XenU than in vmware ws (both accessing
the same raw partition)
- Network IO is at the same level in xenU and vmware, which is about 30%
slower than dom0/native net io (netpipe, 2 machines using 1000Mbit ethernet
connected via a switch, xenU and vmware bridged).
--
c u
henning
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next reply other threads:[~2005-02-04 15:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-04 15:23 Ronald G. Minnich [this message]
2005-02-07 4:19 ` blstuart
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