Help: FreeBSD 6.3 - em driver & taskqueue & priority
joe.kuan at itrinegy.com
Tue Jul 8 12:26:38 UTC 2008
On 8 Jul 2008, at 12:35, Ivan Voras wrote:
> Joe Kuan wrote:
>> Hi all,
>> I have implemented an network application in kernel space and it is
>> working fine. The application involves 3 network interfaces that
>> 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
>> 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
> A wild theory: are the NICs separate / individual and on separate
> If they are not (e.g. two of them are on the same card or bus) it
> be a hardware issue.
em0 and em1 are on the same card. Em2 is on the separate card.
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