touch-packages team mailing list archive
-
touch-packages team
-
Mailing list archive
-
Message #42356
[Bug 1337576] Re: dash inability - cron starts binary with /bin/sh
** Tags removed: targetmilestone-inin1410
** Tags added: targetmilestone-inin---
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dash in Ubuntu.
https://bugs.launchpad.net/bugs/1337576
Title:
dash inability - cron starts binary with /bin/sh
Status in dash package in Ubuntu:
New
Bug description:
-- Problem Description --
CRON uses shell to start a binary executable defined in crontab, which is a waste of the resources for the extra shell process hanging in the system. It's supposed to run it directly with exec system call.
*** Here are some command outputs to see the extra process(12327) and relevant information: ***
# ps -ef | grep -e CRON -e PMLnx
root 12326 771 0 13:59 ? 00:00:00 CRON
root 12327 12326 0 13:59 ? 00:00:00 /bin/sh -c /var/perf/pm/bin/daemon_PMLnx <--- extra layer, a waste
root 12328 12327 0 13:59 ? 00:00:00 /var/perf/pm/bin/daemon_PMLnx
# crontab -l
59 * * * * /var/perf/pm/bin/daemon_PMLnx
# file /var/perf/pm/bin/daemon_PMLnx
/var/perf/pm/bin/daemon_PMLnx: ELF 64-bit LSB executable, 64-bit PowerPC or cisco 7500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.0.0, BuildID[sha1]=1761d6d97eabb4e52870cb517fe6bf457e5bf89e, stripped
# uname -a
Linux ubuntu 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:09:21 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
# dpkg -l cron
Name Version Architecture Description
+++-=====-==================-=============-=========================
ii cron 3.0pl1-124ubuntu2 ppc64el process scheduling daemon
*** Expect cron to directly execute a binary like this ***
# ps -ef | grep -e CRON -e PMLnx
root 2293 2223 0 09:59 ? 00:00:00 /usr/sbin/CRON -n
root 2294 2293 0 09:59 ? 00:00:00 /var/perf/pm/bin/daemon_PMLnx
# uname -a
Linux hulala 3.12.15-3-default #1 SMP Wed Apr 2 17:08:55 UTC 2014 (69c2ea8) ppc64le ppc64le ppc64le GNU/Linux
# cat /etc/SuSE-release
SUSE Linux Enterprise Server 12 (ppc64le)
VERSION = 12
PATCHLEVEL = 0
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dash/+bug/1337576/+subscriptions