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[Xen-users] Performance and limitations of virtual bridges

To: <bridge@xxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] Performance and limitations of virtual bridges
From: Fermín Galán Márquez <fermin.galan@xxxxxxx>
Date: Mon, 7 May 2007 20:32:17 +0200
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Hi,

Is there a limit in the number of interfaces a virtual bridge (created with
brctl) can support without having a severe impact in performance?

I guess that there is no absolute answer for that question :), but maybe
there is some kind of procedure/tool to know the "stress" or "load" that a
virtual bridge is supporting in a given moment (in a similar way that a
"top" can show you the CPU load).

My question is due to I'm using a virtual bridge with 14 interfaces (each
interface correspond to a Xen virtual machine in the same physical host)
and, given that I'm experiencing transmission delays in the network
supported by the bridge, I'm suspecting about a loss of performance of it.
 
Thanks in advance!

Best regards,

--------------------
Fermín Galán Márquez
CTTC - Centre Tecnològic de Telecomunicacions de Catalunya
Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860
Castelldefels, Spain
Room 1.02
Tel : +34 93 645 29 12
Fax : +34 93 645 29 01
Email address: fermin dot galan at cttc dot es 



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