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Editorial Team
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Asked: 2026-06-09T12:12:48+00:00

After DJ dies the log files indicate nothing. running: ./script/delayed_job status gives: pid-file for

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After DJ dies the log files indicate nothing.

running: ./script/delayed_job status

gives: pid-file for killed process 1143 found (/appPath/tmp/pids/delayed_job.pid), deleting.
delayed_job: no instances running

The strange thing is if I use: ./script/delayed_job run It will run perfectly in the foreground! And never dies.

Tried many versions of delayed_job and mongoid with same results.

Any one know how to debug?

Using:

rails (3.2.7)

delayed_job_mongoid (2.0.0)

mongoid (3.0.3)

delayed_job (3.0.3)

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1 Answer

  1. Editorial Team

    Turns out delayed_job was executing a job causing a segmentation fault, which would kill the delayed_job daemon.

    After debugging it turns out Random.rand() will cause a reproducible segmentation fault when run in a daemonized environment. This has to do with initial seeding and setup of the random generator, which apparently does not get handled properly by daemonize.

    The solution: Random.new.rand()

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