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[Xen-users] Problems with xenmon
| To: | xen-users@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] Problems with xenmon |
| From: | Jia Rao <rickenrao@xxxxxxxxx> |
| Date: | Wed, 29 Apr 2009 15:45:08 -0400 |
| Delivery-date: | Wed, 29 Apr 2009 12:45:58 -0700 |
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Hi all,
I just tried to use xenmon to monitor VMs in a Xen platform. It is strange that the io_count reported by xenmon
is always zero for all the domains (including dom0). I ran network intensive as
well as disk intensive I/O workloads. Xenmon reports nothing about the I/O
event.
The page transfer is always zero, but the page map
and unmap have values.
Does xen still transfer data from dom0 from/to domu for I/O request? or all the data "transfer" is based on grant table map/unmap?
Best regards,
Jia.
FYI:
xen 3.3 (PV)
CentOS Linux 2.6.18-3 for dom0 and
domU
Intel Xeon two 4-core
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