Is this a high interrupt rate for nics?

M. Parsons mrparsons at gmail.com
Mon May 9 10:03:19 PDT 2005


Greg 'groggy' Lehey wrote:

>On Sunday,  8 May 2005 at  9:02:08 -0400, M. Parsons wrote:
>  
>
>>Freebsd-5.3 SMP Kernel. Polling enabled.
>>
>>bash-2.05b$ vmstat -i
>>interrupt                          total       rate
>>irq5: ep0                        2937064          1
>>irq11: ed0                     298318862        165
>>irq10: de0                     276544892        152
>>
>>Are those normal for ed0 and de0?  Compared to the ep0 nic of rate
>>of 1 (although the ep0 nic is not used as much as the other two nics
>>obviously).
>>    
>>
>
>Depends on what you mean by "normal".  You'll get one interrupt per
>packet, and those rates are perfectly normal.  If you're not
>transferring anything, you shouldn't be getting any interrupts.
>
>  
>
Ok, thats what I thought.  Just seeing the difference between ep0 and 
the other two made me a little confused.  And seeing as ed0 and de0 are 
used about 100x more often than the ep0, those numbers seem about right 
then.

Thanks for the answer.

Mark


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