[Bug 1702785] Re: High memory and "can't fork" on heavy long-lived cron daemon

[Jamon Camisso]

I ran into this as well, with the same host's cron daemon reaching ~8GB
RSS memory after a month.

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Title:
  High memory and "can't fork" on heavy long-lived cron daemon

Status in cron package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 14.04.5 LTS, cron 3.0pl1-124ubuntu2

  On a server with heavy cron use (a few thousand entries across cron.d
  / users, several runs per second, a few dozen forks running at any
  given time), cron will creep up in memory usage.  Last I saw was 6GB
  RSS, at which point it will start doing:

  Jul  6 07:01:27 host cron[21699]: (CRON) error (can't fork)

  Not all runs will fail, but this trend will continue until cron is
  restarted.

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