Public bug reported:
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.
** Affects: cron (Ubuntu)
Importance: Undecided
Status: Confirmed
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https://bugs.launchpad.net/bugs/1702785
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cron/+bug/1702785/+subscriptions
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