Hi, On Mon, Apr 30, 2012 at 12:06:25PM +0300, Pasi Kärkkäinen wrote: > > I'd say that your numbers are more or less in line with a recent benchmark > > we conducted at Exceliance and which is summarized below (each time the > > hardware was running a single VM) : > > > > > > http://blog.exceliance.fr/2012/04/24/hypervisors-virtual-network-performance-comparison-from-a-virtualized-load-balancer-point-of-view/ > > > > (BTW you'll note that Xen was the worst performer here with 80% loss > > compared to native performance). > > Note that Ubuntu 11.10 kernel is lacking important drivers such as the > Xen ACPI power management / cpufreq drivers so it's not able to use the > better performing CPU states. That driver is merged to recent upstream Linux > 3.4 (-rc). > Also the xen-netback dom0 driver is still unoptimized in the upstream Linux > kernel. > > Using RHEL5/CentOS5 as Xen host/dom0, or SLES11 or OpenSuse is a better idea > today > for benchmarking because those have the "fully optimized" kernel/drivers. > Upstream Linux will get the optimizations in small steps (per the Linux > development model). > > Citrix XenServer 6 is using the optimized kernel/drivers so that explains the > difference > in the benchmark compared to Ubuntu Xen4.1. > > I just wanted to hilight that.
Thanks for these useful information Pasi ! I'm Baptiste will be very interested! Cheers, Willy
