[9fans] Re: [Xen-devel] performance problems (fwd)

[9fans] Re: [Xen-devel] performance problems (fwd)

[Ronald G. Minnich]

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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Re: [9fans] Re: [Xen-devel] performance problems (fwd)

[blstuart]

In message <Pine.LNX.4.58.0502040823110.14256@enigma.lanl.gov>, "Ronald G. Minn
ich" writes:
>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

Is there a place where we can download the patches?  There didn't
appear to be any xen support in the latest CD image I pulled.

Thanks,
Brian L. Stuart