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xen-devel
Re: [Xen-devel] event TRC_MEM_PAGE_GRANT_TRANSFER
Cesar Fernandes wrote:
Greetings,
I'm using xen 3.0.4_1. I need to log the event
TRC_MEM_PAGE_GRANT_TRANSFER, which, I believe, is the number of page
exchanges between domU and dom0. It seems that this event is not being
logged in xen buffer, therefore, xenmon/xentrace is not working either.
Yeah I noticed that I/O count has not been working lately in xenmon but
haven't had a chance yet to see why. The TRC_MEM_PAGE_GRANT_TRANSFER
event is being "logged" but the reason it doesn't show up in the trace
buffer may be because that event is never actually happening. It seems
that there has been some change in the mechanism used to move I/O pages
between domains.
So some research needs to be done to figure out exactly what code should
be instrumented with some trace call in order to provide xenmon with
data on the number of I/O's or I/O pages. If anyone can help, it would
be appreciated.
Rob Gardner
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