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[Xen-users] Problems with xenmon

To: xen-users@xxxxxxxxxxxxxxxxxxx
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,
xen 3.3 (PV)
CentOS Linux 2.6.18-3 for dom0 and domU
Intel Xeon two 4-core
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