BRAUN, Stefanie wrote: > 1. Subtest: VLC reads video from local disk and streams it via udp to another pc > Host performance: 11% 11% > kvm process in host (top): 22% 22% > vlc process in vmu (top): 15% 7% > > While this isn't wonderful, it's not your major bottleneck now. What's the bandwidth generated by the workload? Generated Bandwidth : 6500 kbit per sec > > 4. Subtest: Reading video locally, adding a logo to the video stream and then saving the video locally > Host performance: 50% 50% > kvm process in host (top) : 99% 99% > vlc process in vmu (top) : 99% 99% > Now this is bad. Please provide the output of 'kvm_stat -1' while this is running. Also, describe the guest. Is it Linux? if so, i386 or x86_64? and is CONFIG_HIGHMEM enabled? Linux, Fedora 10, x86_64, (2.6.27.21-170.2.56.fc10.x86_64) The config file does not contain a CONFIG_HIGHMEM parameter. UDP performance is a known issue now, and we are working on it. TCP is much better due to segmentation offload. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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