Originální popis anglicky:
ksoftirqd - Softirq daemon
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.
ksoftirqd was introduced during the 2.3 development series as part of the
softnet work by Alexey Kuznetsov and David Miller.
