Everything freshly pulled and rebuilt sunday afternoon. (no crashes yet; knock wood...) Four VMs, all identical filesystems, created identically, running the exact same job: # xm list Dom Name Mem(MB) CPU State Time(s) 0 Domain-0 54 0 r---- 643.7 1 This is VM 1 63 1 ----- 220.4 2 This is VM 2 63 0 ----- 831.5 3 This is VM 3 63 1 ----- 211.5 4 This is VM 4 63 0 ----- 205.6 and VM2 is clearly running through its work much faster than the other three VMs. I shut everything down, rebooted, recreated and restarted everything and same results. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "We all enter this world in the | Support Electronic Freedom same way: naked; screaming; soaked | http://www.eff.org/ in blood. But if you live your | http://www.anti-dmca.org/ life right, that kind of thing |--------------------------- doesn''t have to stop there." -- Dana Gould ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Is it a Dual Processor system, or just a Hyperthreaded Core? I don''t know if that would make much difference but it might be useful information to those in the know. Can you try it with no SMP? James From: Derek Glidden Sent: Mon 19/07/2004 2:29 PM To: xen-devel@lists.sourceforge.net Subject: [Xen-devel] scheduling weirdness Everything freshly pulled and rebuilt sunday afternoon. (no crashes yet; knock wood...) Four VMs, all identical filesystems, created identically, running the exact same job: # xm list Dom Name Mem(MB) CPU State Time(s) 0 Domain-0 54 0 r---- 643.7 1 This is VM 1 63 1 ----- 220.4 2 This is VM 2 63 0 ----- 831.5 3 This is VM 3 63 1 ----- 211.5 4 This is VM 4 63 0 ----- 205.6 and VM2 is clearly running through its work much faster than the other three VMs. I shut everything down, rebooted, recreated and restarted everything and same results. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "We all enter this world in the | Support Electronic Freedom same way: naked; screaming; soaked | http://www.eff.org/ in blood. But if you live your | http://www.anti-dmca.org/ life right, that kind of thing |--------------------------- doesn''t have to stop there." -- Dana Gould ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Are all the VM workloads similar? We still have CPU scheduler problems, in that I/O-bound VMs will be unfairly penalised. We have someone working on fixing this over the summer. -- Keir> > Everything freshly pulled and rebuilt sunday afternoon. (no crashes > yet; knock wood...) Four VMs, all identical filesystems, created > identically, running the exact same job: > > # xm list > Dom Name Mem(MB) CPU State Time(s) > 0 Domain-0 54 0 r---- 643.7 > 1 This is VM 1 63 1 ----- 220.4 > 2 This is VM 2 63 0 ----- 831.5 > 3 This is VM 3 63 1 ----- 211.5 > 4 This is VM 4 63 0 ----- 205.6 > > and VM2 is clearly running through its work much faster than the other > three VMs. I shut everything down, rebooted, recreated and restarted > everything and same results. > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > "We all enter this world in the | Support Electronic Freedom > same way: naked; screaming; soaked | http://www.eff.org/ > in blood. But if you live your | http://www.anti-dmca.org/ > life right, that kind of thing |--------------------------- > doesn''t have to stop there." -- Dana Gould > > > > ------------------------------------------------------- > This SF.Net email is sponsored by BEA Weblogic Workshop > FREE Java Enterprise J2EE developer tools! > Get your free copy of BEA WebLogic Workshop 8.1 today. > http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Jul 19, 2004, at 3:19 AM, Keir Fraser wrote:> > Are all the VM workloads similar? We still have CPU scheduler > problems, in that I/O-bound VMs will be unfairly penalised. We have > someone working on fixing this over the summer.Yeah, all four VMs were running the identical task, started together within the amount of time it took me to switch between ssh sessions. (Specifically I did "emerge sync" which rsync''s the latest gentoo repository data to the host and imports the metadata about version numbers, followed by "emerge -u system" which downloads/compiles/upgrades all the packages that need upgrading on the system.) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "We all enter this world in the | Support Electronic Freedom same way: naked; screaming; soaked | http://www.eff.org/ in blood. But if you live your | http://www.anti-dmca.org/ life right, that kind of thing |--------------------------- doesn''t have to stop there." -- Dana Gould ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel