NAME

queuedefs − queue description file for at(1), batch(1), and crontab(1)

SYNOPSIS

/var/adm/cron/queuedefs

DESCRIPTION

The queuedefs file describes the characteristics of the queues managed by cron (see cron(1M)). Each non-comment line in this file describes one queue. The format of the lines are as follows:

q. [njob j] [nice n] [nwait w]

The fields in this line are:

q The name of the queue, such that a is the default queue for jobs started by at (see at(1)), b is the queue for jobs started by batch (see batch(1)), and c is the queue for jobs run from a crontab file (see crontab(1)). Queue names d through y designate user-defined queues. 

njob The maximum number of jobs that can be run simultaneously in that queue.  Although any number can be specified here, the total number of jobs that can be run on all the queues is limited to 40. 

nice The nice value to give to all jobs in that queue that are not run with a user ID of super-user (see nice(1)). 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 more than 40 jobs were running in all the queues (see njob above). 

EXAMPLES

Consider the following queuedefs file:

a.4j1n
b.2j2n90w

The file is interpreted as follows:

a.4j1n The a queue, for at jobs (see at (1)), can have up to 4 jobs running simultaneously, and those jobs will be run with a nice value of 1. 

Since no nwait value is 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 (see cron(1M)).

b.2j2n90w The b queue, for batch jobs (see batch(1)), can have up to 2 jobs running simultaneously. Those jobs will be run with a nice value of 2.  If a job cannot be run because too many other jobs are running, cron will wait 90 seconds before trying again to run it. 

All other queues can have up to 40 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 trying again to run it. 

SEE ALSO

at(1), batch(1), nice(1), crontab(1), cron(1M), proto(4)

STANDARDS CONFORMANCE

queuedefs: SVID2, SVID3

Hewlett-Packard Company  —  HP-UX Release 10.20:  July 1996