[Xen-users] Guest domain performance collection

["Andrew Armstrong" <andrew@xxxxxxxxxxxxxx>]

Hello,

 

I have been investigating ways in collecting performance statistics of Guest domains running under Xen.

 

1) I am interested in finding out whether there is a way to obtain the current memory usage (not the amount allocated) for each guest domain?

 

Xentop and other utilities display the amount of memory/RAM allocated to a domain, but not the amount of memory in use that you would see via Windows Task Manager for example.

 

I assume the RAM in use value is impossible to obtain from Xen, because Xen does not know how much memory the Windows/Linux domain is actually consuming.

 

2) I am currently using ntfsresize to obtain the amount of disk space in use for a guest domain, however if the Windows guest is writing to the disk at the time this collection fails with a consistency error (a re-try a few moments later will usually succeed).

 

Is there a more suitable way to obtain disk space in use information of a Windows guest?

 

Cheers,

Andrew

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