hello,
sorry for the delay,
Le Thu, Feb 23, 2012 at 10:38:07AM +0200, Gleb Natapov ecrivait :
>
> Ah, I guess the reason is that it records events only of IO thread. You
> need to trace all vcpu threads too. Not sure trace-cmd allows more then
> one -P option though.
I manage to have the physical server with only one VM with the
slowly function and take trace during the slowly function.
I upload trace in http://www.roullier.net/Report/ with :
o report.txt.3.1.gz : with kernel 3.1
o report.txt.3.2.gz : with kernel 3.2
o report.txt.vhost-net-3.1.gz : with kernel 3.1 and vhost-net
o report.txt.vhost-net.3.2.gz : with kernel 3.2 and vhost-net
With 3.2 + vhost-net we have 10.5s (to remember 8s with
vmware esxi 4).
David.
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