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* kvm network performance
@ 2009-02-10 16:11 Riccardo Veraldi
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From: Riccardo Veraldi @ 2009-02-10 16:11 UTC (permalink / raw)
  To: kvm

Hello,
I am using kvm83 on Centos 5.2
I did some iperf test on my kvm guest and I got the following results 
over a 1GB connection:

~650Mbit/s inbound
~250Mbit/s outbound

that is  performance appears to be asymmetric.

Is this normal ?

The inbound data flow is quite impressive as performance but the 
outbound is poorer.
How come this happens ?

I di dtest on the bare machine ad it is around 800Mbit/s inbound and 
outbound.

any hints ?

thank you

Rick


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