-----Ursprüngliche Nachricht----- Von: BRAUN, Stefanie Gesendet: Montag, 6. April 2009 18:25 An: 'Avi Kivity' Betreff: AW: KVM performance -----Ursprüngliche Nachricht----- Von: Avi Kivity [mailto:avi@xxxxxxxxxx] Gesendet: Montag, 6. April 2009 13:45 An: BRAUN, Stefanie Cc: kvm@xxxxxxxxxxxxxxx Betreff: Re: KVM performance BRAUN, Stefanie wrote: > Hallo, > > as I want to switch from XEN to KVM I've made some performance tests > to see if KVM is as peformant as XEN. But tests with a VMU that > receives a streamed video, adds a small logo to the video and streams > it to a client have shown that XEN performs much betten than KVM. > In XEN the vlc (videolan client used to receive, process and send the > video) process > within the vmu has a cpuload of 33,8 % whereas in KVM the vlc process > has a cpuload of 99.9 %. > I'am not sure why, does anybody now some settings to improve the KVM > performance? > Is this a tcp test? Can you test receive and transmit separately? Hello, it's a "transcoder" test, but without transcoding between video formats, the vmu just adds a logo (a watermark) into the video. At the same time the vmu performed several actions: - receiving a streamed video via udp - adding a logo to the video - sending the streamed video via udp But I think I can split up the test into the following subtests and provide further performance values Sub test 1 receive: - Receiving the video from network (udp) and saving locally Sub test 2 transmit: - Reading the video from local ressource and sending via network Sub test 3 process: - Reading the video from local ressource, adding the logo to the video stream and saving it again locally. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
