On Mon, Jul 5, 2010 at 7:12 PM, Scholte van Mast, Rene <r.scholtevanm...@iq-optimize.de> wrote: > Hello, > I have trouble with the network performance inside my virtual machines.
As I understand this mailing list is for development discussion, and people wanting support are generally invited to report the problem to one of the support channels listed here: http://www.ubuntu.com/support/community Before you do that, a few things I'd check are: (VMs often have trouble with SMP) 1) Does the problem occur when you only use a single connection on both host and client? 2) How much CPU is used on the client? (what does top say?) 3) How many CPUs are reported in /proc/cpuinfo 3a) Does increasing the number of CPUs assigned to the client help? 3b) Alternatively, does assigning only a single CPU to the client help? Also there is a related discussion on tuning for performance on 10GB links with KVM http://linux-iscsi.org/index.php/KVM-LIO-Target Finally it is known the TX mitigation can cause problems with KVM performance. I am not sure if this is your problem, but I'd look at look at: https://bugzilla.redhat.com/show_bug.cgi?id=504647 and see if disabiling TX mitigation helps. -- John C. McCabe-Dansted -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
