Re: Expected haproxy performance inside a VMWare instance

From: Guillaume Bourque <>
Date: Mon, 14 Jul 2008 11:12:09 -0400

Hi all

We use haproxy in a vm on top of vmware server to load balance RDP traffic for 70 users and it's working great

it's using 2-3 % CPU on dual quad core Dell 2950 server

All our users go through the RDP load balancer for all there applications ( IE, outllook and corporate APPS) and find it fast enough. but it's not a very big setup.


Patrick Viet a écrit :
> On Mon, Jul 14, 2008 at 3:59 PM, lists <> wrote:
>> Is this an expected result? same test results on 64bit and 32bit
>> VMs/hardware
>> Any performance advise on VM platform?
> Most of the job of a load balancer is done on the network and the system.
> All the network job is rewritten by virtualization, so is most of the
> system work (ie. syscall interception = double execution :
> catch/rewrite, execute + other network overhead).
> Therefore it is perfectly normal that your performance in a VM is bad.
> I advise that you don't use haproxy (or any load balancer) in a VM if
> you need any high performance.
> This can't be helped, it's about how a VM works.
> Patrick

Guillaume Bourque, B.Sc.,
consultant, infrastructures technologiques
Logisoft Technologies inc.
514 576-7638
Pour mes recherches j'utilise un site très efficace: 
Received on 2008/07/14 17:12

This archive was generated by hypermail 2.2.0 : 2008/07/14 17:15 CEST