ksoftirqd(9)
NAME
ksoftirqd - Softirq daemon
DESCRIPTION
ksoftirqd is a per-cpu kernel thread that runs when the machine is
under heavy soft-interrupt load. Soft interrupts are normally serviced
on return from a hard interrupt, but it's possible for soft interrupts
to be triggered more quickly than they can be serviced. If a soft
interrupt is triggered for a second time while soft interrupts are
being handled, the ksoftirq daemon is triggered to handle the soft
interrupts in process context. If ksoftirqd is taking more than a tiny
percentage of CPU time, this indicates the machine is under heavy soft
interrupt load.
HISTORY
- ksoftirqd was introduced during the 2.3 development series as part of
the softnet work by Alexey Kuznetsov and David Miller.