How to create a custom scheduler

Question

Question

I want to create a scheduler to montor the status of list of backend jobs ( say limit is 10). there going to be job queue. Need to pick a job form job queue when one of the current processing job is finished.
What is the best way to implement this

Product version: IRIS 2024.3

Discussion (3)1

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score 0 · Answer 1 · 2025-04-02T19:44:23-04:00

When you start background job, in the master process, you can collect $zchild with a pid of started process

and collect them in the logs, and then in the loop you can check $data(^$job(child)) if it's still running

that's the simplest approach

score 0 · Answer 2 · 2025-04-02T23:36:45-04:00

Saman Marasinghe · Apr 2

Thanks, much appreciated

0 0

score 0 · Answer 3 · 2025-04-03T00:52:54-04:00

You might want to look into Work queue Manager. It can be configured to use multiple agents to process anything in a queue. This approach is best if the queue is fixed at the start and during the run of the processing, i.e. no items added to be processed.

If you are more for a spooling type setup. You can use Integrations to monitor a spool global and start jobs based on poolsize etc.

ref: Using the Work Queue Manager | Using the Work Queue Manager | InterSystems IRIS Data Platform 2025.1