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OpenSolaris 2009.06 - man page for queuedefs (opensolaris section 4)

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queuedefs(4)				   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 simultaneously 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.

	 #
	 #
	 a.4j1n
	 b.2j2n90w

       This file specifies that the a queue, for at jobs, can have up to 4 jobs running  simulta-
       neously; 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 running 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 trying 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 sec-
       onds before trying 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 5.11				    1 Mar 1994				     queuedefs(4)
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