Hi, To identify the suitable virtualization technology for a project, we were evaluating XEN against openVZ in terms of CPU usage for a networking application. The networking application indulges heavily in data transfer between the virtual nodes/containers/OS''s inside a high end machine. While measuring the CPU usage of XEN, we see that the CPU usage indicated by the virt-manager tool and xentop are way different. In a four core machine, virt-manager indicates a cpu usage of 40% where as xentop 130%. The domU''s are configured with a virtual cpu value 1. Xen version used was 3.4.2. Thanks, Mahesh
how to calculate cpu ulitities in xentop ? It often appears numbers above 100%. this is my question too.> Date: Fri, 5 Oct 2012 10:52:52 +0530 > From: mahesh.thiagarajan@carc.co.in > To: xen-users@lists.xen.org. > Subject: [Xen-users] virt-manager vs xentop > > Hi, > > To identify the suitable virtualization technology for a project, we > were evaluating XEN against openVZ in terms of CPU usage for a > networking application. The networking application indulges heavily in > data transfer between the virtual nodes/containers/OS''s inside a high > end machine. While measuring the CPU usage of XEN, we see that the CPU > usage indicated by the virt-manager tool and xentop are way different. > In a four core machine, virt-manager indicates a cpu usage of 40% where > as xentop 130%. > > The domU''s are configured with a virtual cpu value 1. > Xen version used was 3.4.2. > > Thanks, > Mahesh > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users
From: duanshuidao@hotmail.com To: mahesh.thiagarajan@carc.co.in; xen-users@lists.xen.org Subject: RE: [Xen-users] virt-manager vs xentop Date: Fri, 5 Oct 2012 12:05:17 +0000 how to calculate cpu ulitities in xentop ? It often appears numbers above 100%. this is my question too.> Date: Fri, 5 Oct 2012 10:52:52 +0530 > From: mahesh.thiagarajan@carc.co.in > To: xen-users@lists.xen.org. > Subject: [Xen-users] virt-manager vs xentop > > Hi, > > To identify the suitable virtualization technology for a project, we > were evaluating XEN against openVZ in terms of CPU usage for a > networking application. The networking application indulges heavily in > data transfer between the virtual nodes/containers/OS''s inside a high > end machine. While measuring the CPU usage of XEN, we see that the CPU > usage indicated by the virt-manager tool and xentop are way different. > In a four core machine, virt-manager indicates a cpu usage of 40% where > as xentop 130%. > > The domU''s are configured with a virtual cpu value 1. > Xen version used was 3.4.2. > > Thanks, > Mahesh > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users
2012/10/10 Jun Hu <duanshuidao@hotmail.com>:> Hi experts: > > why cpu % show 135.6% which is over 100%？ > > how do I compute exact cpu ulitities? > > > xentop - 20:43:55 Xen 4.1.3_02-0.5.1 > 2 domains: 2 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown > Mem: 4122636k total, 4117100k used, 5536k free CPUs: 2 @ 2793MHz > NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) > VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_R > D VBD_WR VBD_RSECT VBD_WSECT SSID > Domain-0 -----r 184 4.8 1839104 44.6 no limit n/a > 2 0 0 0 0 0 > 0 0 0 0 0 > sles11sp2p -----r 1194 135.6 2097152 50.9 2097152 50.9 > 2 1 128 26 2 0 372 > 3 3360 121590 206784 0 > > > > > From: hu jun > Sent: Friday, October 05, 2012 8:05 PM > To: Mahesh Thiagarajan ; . > Subject: Re: [Xen-users] virt-manager vs xentop > > > > ________________________________ > From: duanshuidao@hotmail.com > To: mahesh.thiagarajan@carc.co.in; xen-users@lists.xen.org > Subject: RE: [Xen-users] virt-manager vs xentop > Date: Fri, 5 Oct 2012 12:05:17 +0000 > > how to calculate cpu ulitities in xentop ? It often appears numbers above > 100%. > > > this is my question too. > > >> Date: Fri, 5 Oct 2012 10:52:52 +0530 >> From: mahesh.thiagarajan@carc.co.in >> To: xen-users@lists.xen.org. >> Subject: [Xen-users] virt-manager vs xentop >> >> Hi, >> >> To identify the suitable virtualization technology for a project, we >> were evaluating XEN against openVZ in terms of CPU usage for a >> networking application. The networking application indulges heavily in >> data transfer between the virtual nodes/containers/OS's inside a high >> end machine. While measuring the CPU usage of XEN, we see that the CPU >> usage indicated by the virt-manager tool and xentop are way different. >> In a four core machine, virt-manager indicates a cpu usage of 40% where >> as xentop 130%. >>100% indicates a core (vcpu) to 100%, ie if there are 4 cores, xm top could indicate 400% the 135.6 indicate that sles11sp2p is using cores of 1.3 dom0 _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users
Flako ,thanks a lot. -----原始邮件----- From: Flako Sent: Wednesday, October 10, 2012 11:21 PM To: xen-users@lists.xen.org Subject: Re: [Xen-users] why xentop cpu utilities show over 100% 2012/10/10 Jun Hu <duanshuidao@hotmail.com>:> Hi experts: > > why cpu % show 135.6% which is over 100%？ > > how do I compute exact cpu ulitities? > > > xentop - 20:43:55 Xen 4.1.3_02-0.5.1 > 2 domains: 2 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown > Mem: 4122636k total, 4117100k used, 5536k free CPUs: 2 @ 2793MHz > NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) > VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_R > D VBD_WR VBD_RSECT VBD_WSECT SSID > Domain-0 -----r 184 4.8 1839104 44.6 no limit n/a > 2 0 0 0 0 0 > 0 0 0 0 0 > sles11sp2p -----r 1194 135.6 2097152 50.9 2097152 50.9 > 2 1 128 26 2 0 372 > 3 3360 121590 206784 0 > > > > > From: hu jun > Sent: Friday, October 05, 2012 8:05 PM > To: Mahesh Thiagarajan ; . > Subject: Re: [Xen-users] virt-manager vs xentop > > > > ________________________________ > From: duanshuidao@hotmail.com > To: mahesh.thiagarajan@carc.co.in; xen-users@lists.xen.org > Subject: RE: [Xen-users] virt-manager vs xentop > Date: Fri, 5 Oct 2012 12:05:17 +0000 > > how to calculate cpu ulitities in xentop ? It often appears numbers above > 100%. > > > this is my question too. > > >> Date: Fri, 5 Oct 2012 10:52:52 +0530 >> From: mahesh.thiagarajan@carc.co.in >> To: xen-users@lists.xen.org. >> Subject: [Xen-users] virt-manager vs xentop >> >> Hi, >> >> To identify the suitable virtualization technology for a project, we >> were evaluating XEN against openVZ in terms of CPU usage for a >> networking application. The networking application indulges heavily in >> data transfer between the virtual nodes/containers/OS's inside a high >> end machine. While measuring the CPU usage of XEN, we see that the CPU >> usage indicated by the virt-manager tool and xentop are way different. >> In a four core machine, virt-manager indicates a cpu usage of 40% where >> as xentop 130%. >>100% indicates a core (vcpu) to 100%, ie if there are 4 cores, xm top could indicate 400% the 135.6 indicate that sles11sp2p is using cores of 1.3 dom0 _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users