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[Xen-users] why xentop cpu utilities show over 100%



Hi experts:
 
why  cpu %  show 135.6%  which is over 100%ï
 
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
Subject: Re: [Xen-users] virt-manager vs xentop
 



From: duanshuidao@xxxxxxxxxxx
To: mahesh.thiagarajan@xxxxxxxxxx; xen-users@xxxxxxxxxxxxx
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@xxxxxxxxxx
> To: xen-users@xxxxxxxxxxxxxx
> 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@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users


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