RE: Slow network performance with KVM

> -Original Message- > From: Bob Proulx [mailto:b...@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 versio

Re: Slow network performance with KVM

Katynski, Bogdan wrote: > Bob Proulx wrote: > > On Squeeze you would want to use a backported 3.2 kernel. It would be > > worthwhile to try it if you are suffering from this performance > > problem. Here are instructions: > > I installed the backported 3.2.0 kernel and forced vhost-net module lo

RE: Slow network performance with KVM

> -Original Message- > From: Bob Proulx [mailto:b...@proulx.com] > Sent: Monday, December 17, 2012 8:15 PM > To: debian-user@lists.debian.org > Subject: Re: Slow network performance with KVM > > I forgot that this module is only available in later kernels! Sorry. &g

Re: Slow network performance with KVM

Katynski, Bogdan wrote: > > Bob Proulx wrote: > > What is the output: > > > > $ lsmod | grep vhost_net > > I don't have the module loaded and what's worse - I don't have this module :( > > root@vmhost:~# modprobe vhost-net > FATAL: Module vhost_net not found. > ... > I don't have these options

RE: Slow network performance with KVM

> -Original Message- > From: Bob Proulx [mailto:b...@proulx.com] > Sent: Saturday, December 15, 2012 5:54 AM > To: debian-user@lists.debian.org > Subject: Re: Slow network performance with KVM > > Katynski, Bogdan wrote: > > > I noticed a rather poor n

Re: Slow network performance with KVM

Katynski, Bogdan wrote: > I noticed a rather poor network guest-guest performance. Have you loaded the vhost-net kernel module? It is a huge lever for network performance. What is the output: $ lsmod | grep vhost_net Here are a couple of references: http://www.linux-kvm.com/content/how-m

Re: Very slow network performance with KVM using virtio and tap.

Thanks for the links.  I followed the first one when I set these up initially.  I never got virt-install to work right.  I create the xml file and the disk image manually.  I then just use virsh for define, start and stop.  My problem is the network performance is the sa

Re: Very slow network performance with KVM using virtio and tap.

Robert, following http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-squeeze-server i reach to the conclusion that using kvm network config is "troublesome". I ended using "--network=bridge:br0 " on startup the vm, with qemu . Anyway, from another squeeze

Very slow network performance with KVM using virtio and tap.

I have tried a KVM setup 2 different ways.  The first was using a straight bridge without using tap at all.  The WinXP VM is using the latest known version of the virtio drivers.  The bridge is on a gigabit nic.  The second setup was using a bridge containing a tap