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RE: Slow network performance with KVM



> -----Original Message-----
> From: Bob Proulx [mailto:bob@proulx.com]
> Sent: Tuesday, December 18, 2012 8:27 PM
> To: debian-user@lists.debian.org
> Subject: Re: Slow network performance with KVM
> 
> > > You might also want to try the backported newer versions of
> > > libvirt-bin kvm packages.  There have been several improvements.
> 
> I don't recall but it is likely that in order to use the vhost-net
> driver that the newer kvm and related packages are required.
> 
> I do know that I had a large network performance difference between
> using the vhost-net driver and not using it.  I would need to set up a
> test case and benchmark now to recapture data on how much.  But I
> remember that it was large.  I am sure that you will do better with the
> driver than without it.
> 
> 
> Another possibility would be to use a different system for this
> development and testing.  Because it is very easy to install and use
> (literally just an apt-get away) you could turn any system into a VM
> hosting system very easily, as long as it has the resources.  I always
> suggest grabbing a different machine for these types of tests.  Then
> you can safely do this development off to the side without disrupting
> the main system.  After you have determined the proper configuration
> and developed the recipe then you can take the main system forward.
> This strategy is sometimes called "make before break".
> 
> Of course I have a variety of hardware on my network that is always
> being rotated and turned over and so using temporary development
> laboratory victim machines is easy.  If you do not have the hardware
> available then you will need to use your own judgement.
> 

Hi again

Thank's very much for the help. Unfortunatelly I currently don't have any spare machines at hand. I'll try to request/borrow/steal something for the test ;)

Regards
Bogdan Katynski


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