intr process on freebsd

Maxim Dounin mdounin at
Tue Jul 5 13:04:50 MSD 2011


On Tue, Jul 05, 2011 at 08:38:47AM +0000, Richard Kearsley wrote:

> Hi
> I am currently investigating moving our platform from linux to freebsd
> On my test server I can see an increase in cpu usage compared to linux (specifically system cpu% rather than user%)
> On further investigation, it is the "intr" process using a lot of cpu.  Nginx is running ~100 req/sec
> Is this normal behaviour and could anyone further describe what's going on/is this normal etc?
>    12 root       19 -60    -     0K   304K WAIT    0  55:24  7.32% intr

Try pressing 'H' in top to see separate threads, this should give 
you a hint who eats cpu.  8% system at 100r/s seems a bit too many 
for me, too.  But I really doubt it's nginx related.

Maxim Dounin

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