Re: [libvirt] is it possible to set txqueuelen on vnetX devices automatically

On Mon, Apr 02, 2012 at 05:15:55PM +0100, Tim Hughes wrote: > Hello, > > We have been tuning our libvirt hosts and discovered that setting the > txqueuelen on vnetX devices to 2500 we can increase the network throughput > by a factor of almost 10. On an eth device it can be set by hand/rc.local > with the following instructions > http://www.cyberciti.biz/faq/gentoo-centos-rhel-debian-fedora-increasing-... > . Because vnetX devices are named on a 'first free' basis and they come > and go with the guests the rc.local method is not going to work. I think > this needs to be done via libvirt or possibly udev, maybe with some kind of > hook. Ideally I would like to be able to set this automatically for all > vnetX devices when they are created or even better, on a per guest basis. You can probably do this with a hook script: http://libvirt.org/hooks.html Please also file a BZ requesting that this tunable be directly supported by libvirt. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/:| |: http://libvirt.org -o- http://virt-manager.org:| |: http://autobuild.org -o- http://search.cpan.org/~danberr/:| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc:|