IRQ Question ?

Wilkinson, Alex alex.wilkinson at
Wed Apr 18 04:50:28 UTC 2007

FreeBSD 7.0-CURRENT #0: Tue Apr 10 13:47:53 WST 2007

Could be an insanely dumb question, however, I have to ask.

Why don't IRQs in the BIOS map to IRQs in the output of vmstat(8) ?


I manually changed an IRQ assingment of an Intel NIC [em(4)] to be on IRQ 11 in
the BIOS and vmstat(8) reports its as irq16.

  #vmstat -i | egrep -i em
   irq16: em0 uhci0  2990236  18

Can someone (njl@ jhb@) please enlighten me ?


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