Red Hat Bugzilla – Bug 573230
updated daemons restart at +19 nice
Last modified: 2010-12-03 12:26:05 EST
The problem described below for Redhat enterprise linux 5 is also
present in fedora 12.
+++ This bug was initially created as a clone of Bug #552279 +++
Description of problem:
Startup script for yum-udpatesd sets priority at +19
When yum-updatesd updates daemons and they restart they are
started at the same priority changing system behaviour
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. install system at 5.3
2. let yum-updatesd perform updates
3. ps ax -o ni,args
restarted daemons are at +19
daemons should be at normal priority of 0
Easiest fix would be to remove the +19 from the yum-updatesd startup script, although this would also produce a change in load behaviour.
One could argue that the daemon should set its own priority internally for operations that are regarded as heavy, whilst ensuring that operations like execution of %pre/%post-install should be at priority 0, but this would likely require extensive, probably intrusive, changes that probably cannot be justified at this point in the RHEL5 life-cycle.
--- Additional comment from firstname.lastname@example.org on 2010-01-26 12:33:06 EST ---
I confirm this bug exactly as reported, and it's fairly problematic in my environment. It doesn't take long for a process that restarts lots of processes like sshd or puppetd (automatic configuration management software) to get updated by yum-updatesd and inherit the high nice value. From there the problem spreads very quickly to critical system processes via normal system administration procedures and routine process restarts.
At this point, I pretty much need to restart all my red-hat servers once a week to reset nice values.
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