intr process on freebsd

Richard Kearsley Richard.Kearsley at
Tue Jul 5 12:38:47 MSD 2011

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

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