On Friday, July 21, 2017 at 6:27:50 AM UTC-7, Rudy wrote: > > I want to clean up a table daily using schedule at midnight, I don't want > scheduler to poll too often to waste unnecessary resource. how should I do > it? >
I'm pretty sure Niphlod will say (and has said), "Why bother?" -- the scheduler resources are pretty minimal when a task isn't running. Just about everything except the heartbeat change seems like it will consume as much resources. By the way, the 2.15.x builds had the "cron-like" queue option, which I'm looking forward to trying. > 1) give heartbeat a large number in scheduler = Scheduler(db_sch, > heartbeat=7200)? > 2) if len(db_sch().select(db_sch.scheduler_task.ALL)) == 0: > scheduler.queue_task(clear_curr_exch_cache, period=86400, > repeats=0) > 3) create a cron job in linux to start the scheduler (python web2py.py -K > myapp -p 8002), another cron job to kill the process after a fixed period > of time > 4) create a cron job to start the scheduler, call scheduler.terminate() > after db.commit() before return in the task action > 5) combination of above > > Another question: how to i associate tasks to a specific group? I seem to > miss this in the doc > > I'd take a look at the scheduler tests -- Niphlod's default.py controller at <URL: https://github.com/niphlod/w2p_scheduler_tests> seems to have the detailed explanation around lines 600ff /dps Thank you! > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
