From: Dor Laor <dlaor@redhat.com>
To: Alex Rixhardson <alexrixhardson@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: RHEL 4.5 guest virtual network performace
Date: Mon, 16 Aug 2010 22:49:25 +0300 [thread overview]
Message-ID: <4C699645.70209@redhat.com> (raw)
In-Reply-To: <AANLkTinsjDc_+jPMWc-sVeE9SPgi_POf92KcdYYs_F8N@mail.gmail.com>
On 08/16/2010 10:00 PM, Alex Rixhardson wrote:
> Hi guys,
>
> I have the following configuration:
>
> 1. host is RHEL 5.5, 64bit with KVM (version that comes out of the box
> with RHEL 5.5)
> 2. two guests:
> 2a: RHEL 5.5, 32bit,
> 2b: RHEL 4.5, 64bit
>
> If I run iperf between host RHEL 5.5 and guest RHEL 5.5 inside the
> virtual network subnet I get great results (> 4Gbit/sec). But if I run
> iperf between guest RHEL 4.5 and either of the two RHELs 5.5 I get bad
> network performance (around 140Mbit/sec).
Please try netperf, iperf known to be buggy and might consume cpu w/o
real justification
>
> The configuration was made thru virtual-manager utility, nothing
> special. I just added virtual network device to both guests.
>
> Could you guys give me some tips on what should I check?
>
> Regards,
> Alex
> --
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next prev parent reply other threads:[~2010-08-16 19:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-16 19:00 RHEL 4.5 guest virtual network performace Alex Rixhardson
2010-08-16 19:49 ` Dor Laor [this message]
2010-08-16 21:22 ` Alex Rixhardson
2010-08-16 21:35 ` Dor Laor
2010-08-16 21:51 ` Alex Rixhardson
2010-08-16 21:56 ` Dor Laor
2010-08-16 22:05 ` Alex Rixhardson
2010-08-16 23:09 ` Alex Rixhardson
2010-08-17 1:22 ` David S. Ahern
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