[Backgroundrb-devel] Scheduler skipping schedules

hemant gethemant at gmail.com
Thu Jul 19 17:55:44 EDT 2007

On 7/19/07, Levent Ali <levent at leventali.com> wrote:
> There is a line in the backgroundrb codebase:
> sleep 0.1  # TODO this is dangerous; could skip over some jobs
> Could this explain why my scheduler stops triggering?
> It only seems to work for about 12 - 24 hours before schedules are
> being skipped...
> Once I changed the times to using cron trigger in
> backgroundrb_schedules.yml and set the times to every 37th and 59th
> minute of the hour, instead of the previous repeat_interval of
> 60.minutes it seemed to improve but it still stops being triggered
> within a day and doesn't seem to start again unless I stop and start
> background rb...
> Sometimes this is both my schedules, sometimes just one of them...
> Other tasks that are directly triggered still work...
> This is really driving us a bit nuts as we can't get to the bottom of
> it and nobody else seems to have any ideas?
> I did see a post on an Exception not being caught and took care of
> that but it didn't seem to make any difference... The code is
> thoroughly tested and I really doubt it's the application code unless
> the sheer volume of data could affect it?

Hi Levent,

We are working on a new core that hopefully fixes these issues with
scheduling(I have myself observed problems with scheduling and
difficult to reproduce cases), in meanwhile I would see if this
problem can be fixed with a workaround.

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