hi,all:
   I'm testing network performance of nginx using freebsd,and I find something 
strange, that is :while sending huge amount http request to nginx and use top 
to monitor this machine, for some machines a lot of cpu is consumed by 
interrupt but the others not! And I use one machine for test using different 
version of freebsd,then I find Freebsd 8 not using interrupt but 10 does!    In 
order to explain this I first guess it is the polling make it diff,but after I 
using "ifconfig em0 -polling" to disable polling of the network interface it 
does no effect! Now I can't explain it. Who can give me some advice?
       somwu
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