more interrupts with polling(4) on em(4)

Markus Oestreicher m.oe at
Fri Jul 27 23:02:52 UTC 2007

Gergely CZUCZY schrieb:
> Good morning,
> I've noticed 33K interrupts/sec on an em(4) gigabit interface on
> a box. This many interrupts seemed a bit too high, so I thought
> I should enable polling(4). After enabling it i've got 55K per
> second, even higher.
> I've just done "ifconfig em1 polling", and by this the number
> of interrupts increased.

How does vmstat -i look like before and after?


More information about the freebsd-net mailing list