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Re: [Xen-users] Xen Performance

On Wed, Oct 14, 2009 at 5:15 PM, Grant McWilliams
<grantmasterflash@xxxxxxxxx> wrote:

> [  4] local port 47926 connected with port 5001
> write2 failed: Broken pipe
> [ ID] Interval       Transfer     Bandwidth
> [  4]  0.0- 0.0 sec  15.6 KBytes    387 Mbits/sec

That one's not right. Your transfer is only 15.6 KB, plus the Broken pipe.

> I'm also noticing that numbers in the 800-900 Mbit range is consistant for
> Dom0-DomU traffic.

yes, that's what I have as well. It's more than enough for my needs
though, so I can live with that.

> Numbers in the 2.5Gbit range is consistant for traffic
> one way in DomU-DomU. When I get the low numbers 200-350Mb it's also saying
> write2 failed: broken pipe. Maybe something is not right somewhere.

Try disabling iptables on both domUs, see if it matters.
I experienced something like this when testing Windows <-> Linux with
different versions of iperf (iperf-2.0 on Linux vs 1.7 on Windows).


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