Help: FreeBSD 6.3 - em driver & taskqueue & priority
joe.kuan at itrinegy.com
Tue Jul 8 11:08:45 UTC 2008
I have implemented an network application in kernel space and it
is working fine. The application involves 3 network interfaces that
FreeBSD 6.3 can forward mbuf between em0 and em1 in a rate 1.3 - 1.4
millions packets per second. Em2 is used for controlling the network
The problem is that when em0 and em1 are transmitting in 1.3 - 1.4
millions packets per second, the em2 interface becomes irresponsive.
However, my goal is to make the kernelised network application
response as soon as a control packet arrives in em2, ie jumps the
queue ahead of all the packets in em0 and em1.
I think the problem lies on the priority set on the task structure
are all the same for all the em devices. Am I heading in the right
If not, please advise me.
Many thanks in advance
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