Hi,
I think this is a really good question.
I'm curious since we use a lot of stripped-down FreeBSD for modest
performance routers.
We typically enabling our interfaces with POLLING not so much for
performance (it seems to be a negligible improvement nowadays) but so
that we know that our OSPF/BGP/SSH processes are always responsive.
I'd be curious if anybody could get back on this. I've never even
considered things from the perspective of how many interrupts a NIC
could generate other than that they could always generate too many.
- mike
On Dec 26, 2007, at 2:12 AM, Jordi Espasa Clofent wrote:
OK, I'll try to explain in another way.
While I've done network performance test I've monitored the IRQ
rate, and, for example, it's a 7000/8000 interrupts per second in
every NIC (I use 2 NICs in a bridge). The question is
¿how can I know if this irq rate is too high or not? ¿how can I
know if I'm closer to device limits, or kernel limits?
I want to say that I'm don't know if 8000 irq per second means a
high IRQ use or a lower user.
I hope I've explained better at this time.
--
Thanks,
Jordi Espasa Clofent
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