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



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?

Markus
_______________________________________________
freebsd-net@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "freebsd-net-unsubscribe@xxxxxxxxxxx"



Relevant Pages

  • Re: more interrupts with polling(4) on em(4)
    ... I've noticed 33K interrupts/sec on an emgigabit interface on ... This many interrupts seemed a bit too high, ... I've just done "ifconfig em1 polling", ... (without polling on em0) ...
    (freebsd-net)
  • more interrupts with polling(4) on em(4)
    ... I've noticed 33K interrupts/sec on an emgigabit interface on ... This many interrupts seemed a bit too high, ... I've just done "ifconfig em1 polling", ... Isn't polling supposed to lower the interrupt load? ...
    (freebsd-net)
  • Re: [ck] [PATCH] dynamic-tick patch modified for SMP
    ... I use vmstat as that is good enough to tell me how many interrupts/s are ... timers that made no progress until interrupts drove the timers on again. ... the way I modified the patch is for APIC mode to be used if it's built in. ...
    (Linux-Kernel)
  • Re: Devilator - performance monitoring for FreeBSD
    ... systat contains a large number of useful statistics and monitoring pieces, ... including some really useful stuff in systat -vmstat. ... of interesting information to be had from vmstat -z and vmstat -m in terms ... like disk and network interrupts. ...
    (freebsd-hackers)
  • Re: interrupt statistics
    ... >> Speaking of which, why is it some devices are not always present ... > vmstat -i only displays those devices that have generated interrupts. ...
    (freebsd-hackers)