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[Xen-devel] Sar, iostat and vmstat


  • To: "xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Apparao, Padmashree K" <padmashree.k.apparao@xxxxxxxxx>
  • Date: Fri, 12 May 2006 11:27:31 -0700
  • Delivery-date: Fri, 12 May 2006 11:28:40 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcZ18P7vYwh1srwXRVOitUGLZCAyZgAADNcA
  • Thread-topic: Sar, iostat and vmstat

Hi

The sar and vmstat data seem to be very misleading while running inside
a guest or even in dom0. The numbers just don't add up.

For example, I see that when I run an app natively (linux) I see 1000
interrupts/sec, while running the same app inside a guest and collecting
sar either in dom0 or inside the guest, the number of interrupts is
about 40-60. 

Has anyone gotten these tools to work? Would appreciate some help to get
these tools working

Thanks
- Padma

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