mirror of https://github.com/mkerrisk/man-pages
42 lines
1.8 KiB
Groff
42 lines
1.8 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
|
|
.\"
|
|
.\" This manpage is Copyright (C) 2003 Matthew Wilcox
|
|
.\"
|
|
.\" Permission is granted to make and distribute verbatim copies of this
|
|
.\" manual provided the copyright notice and this permission notice are
|
|
.\" preserved on all copies.
|
|
.\"
|
|
.\" Permission is granted to copy and distribute modified versions of this
|
|
.\" manual under the conditions for verbatim copying, provided that the
|
|
.\" entire resulting derived work is distributed under the terms of a
|
|
.\" permission notice identical to this one.
|
|
.\"
|
|
.\" Since the Linux kernel is constantly changing, this manual page may
|
|
.\" be incorrect or out-of-date. The author(s) assume no responsibility
|
|
.\" for errors or omissions, or for damages resulting from the use of the
|
|
.\" information contained herein.
|
|
.\"
|
|
.\" Formatted or processed versions of this manual, if unaccompanied by
|
|
.\" the source, must acknowledge the copyright and authors of this work.
|
|
.\"
|
|
.TH KSOFTIRQD 9 2003-08-24 "Linux 2.6.0" "Linux Programmer's Manual"
|
|
.SH NAME
|
|
ksoftirqd \- Softirq daemon
|
|
.SH DESCRIPTION
|
|
.B 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
|
|
.B ksoftirq
|
|
daemon is triggered to handle the soft interrupts in process context.
|
|
If
|
|
.B ksoftirqd
|
|
is taking more than a tiny percentage of CPU time, this indicates the
|
|
machine is under heavy soft interrupt load.
|
|
.SH HISTORY
|
|
.B ksoftirqd
|
|
was introduced during the 2.3 development series as part of the
|
|
softnet work by Alexey Kuznetsov and David Miller.
|