| io-waits / openvz / network [message #34314] |
Tue, 23 December 2008 09:38  |
arghbis
Messages: 35
Registered: November 2007
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Hi,
I've observed a strange behaviour on my openvz enabled servers. Most of the servers have a very high io-wait value in the cpu-usage graphs. The servers that have low io-wait percentage have only one or two VE, that are not exchanging data between them.
It is strange to notice that the more a server contains VEs that are communicating, the more the io-wait percentage is high.
On the biggest server, i can see in /proc/interrupts that eth0 is responsible for 1.5 10^9 interrupts on each cpu (8 cpus). It sounds abnormal to me.
Does anyone has an opinion on this topic?
The problem is that i want to be sure that these io-waits do not hurt too much the performances.
thanks for any advice
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