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File Formats queuedefs(4)
NAME
queuedefs - queue description file for at, batch, and cron
SYNOPSIS
/etc/cron.d/queuedefs
DESCRIPTION
The queuedefs file describes the characteristics of the
queues managed by cron(1M). Each non-comment line in this
file describes one queue. The format of the lines are as
follows:
q.[njobj][nicen][nwaitw]
The fields in this line are:
q The name of the queue. a is the default queue for
jobs started by at(1); b is the default queue for
jobs started by batch (see at(1)); c is the default
queue for jobs run from a crontab(1) file.
njob The maximum number of jobs that can be run simul-
taneously in that queue; if more than njob jobs are
ready to run, only the first njob jobs will be run,
and the others will be run as jobs that are
currently running terminate. The default value is
100.
nice The nice(1) value to give to all jobs in that queue
that are not run with a user ID of super-user. The
default value is 2.
nwait The number of seconds to wait before rescheduling a
job that was deferred because more than njob jobs
were running in that job's queue, or because the
system-wide limit of jobs executing has been
reached. The default value is 60.
Lines beginning with # are comments, and are ignored.
EXAMPLES
Example 1: A sample file.
SunOS 5.10 Last change: 1 Mar 1994 1
File Formats queuedefs(4)
#
#
a.4j1n
b.2j2n90w
This file specifies that the a queue, for at jobs, can have
up to 4 jobs running simultaneously; those jobs will be run
with a nice value of 1. As no nwait value was given, if a
job cannot be run because too many other jobs are running
cron will wait 60 seconds before trying again to run it.
The b queue, for batch(1) jobs, can have up to 2 jobs run-
ning simultaneously; those jobs will be run with a nice(1)
value of 2. If a job cannot be run because too many other
jobs are running, cron(1M) will wait 90 seconds before try-
ing again to run it. All other queues can have up to 100
jobs running simultaneously; they will be run with a nice
value of 2, and if a job cannot be run because too many
other jobs are running cron will wait 60 seconds before try-
ing again to run it.
FILES
/etc/cron.d/queuedefs queue description file for
at, batch, and cron.
SEE ALSO
at(1), crontab(1), nice(1), cron(1M)
SunOS 5.10 Last change: 1 Mar 1994 2
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:27:30 GMT 2007
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