[Xen-devel] reading time value in dom0 and domU kernels

["sanjay kumar" <sanjay.kushwaha@xxxxxxxxx>]

Hi Folks,
I want to calculate latency in transferring a buffer from domU kernel
to dom0 kernel and vice versa. for that I need a time 'flavour' (cycle
counter time?) which reads the same in dom0 and domU. Could someone
please let me know if cycle counter time is the right time to use? if
not then which one (system time or wall clock time)? Also could someone
please tell me how to read to read this timer value.

if I use rdtsc() in both dom0 and domU, will it give me the same time value?

Thanks,
Sanjay
-- 
----------------------
PhD Student, Georgia Tech
http://www.cc.gatech.edu/~ksanjay/
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