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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  simultane-
           ously  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 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



SunOS 5.9            Last change: 1 Mar 1994                    1






File Formats                                         queuedefs(4)



     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 5.9            Last change: 1 Mar 1994                    2