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It is often a requirement to set a limit on how many jobs, or jobs for a particular user may run at once. Xi-Batch offers this facility, but it is made a little more flexible, in the sense that all jobs are not the same. A huge database reorganisation is more expensive than some trivial queries.
What Xi-Batch provides is a concept of "load levels" which may be assigned to each job. A system wide maximum load level is set up by assigning to the variable LOADLEVEL.
If this is set to for example 6,000, then 6 jobs with load level 1,000 may be run at once, 3 jobs with load level 2,000, 2 jobs with load level 3,000 or some combination like one of load level 5,000 and one of load level 1,000. Other jobs will have to wait.
Each user is limited as to the total load level of jobs he/she may run at once and the maximum for any one job.
Jobs may be run remotely if so enabled, and another machine on the network with "vacant space" in its load level may run jobs from a loaded machine.
Other variables on each machine may control which machine is "chosen" to run a job.
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