On Fri, Apr 8, 2016 at 6:32 AM, Johnny Hughes johnny@centos.org wrote:
On 04/08/2016 06:50 AM, Johnny Carlsen wrote:
Hi,
After switching to the 2.6.32-573.22.1.el6.x86_64 kernel (CentOS 6) a
few weeks ago I have noticed that my servers are now reporting a much higher idle load.
The servers are being monitored with Zabbix, and there is a clear
difference between the older kernel 2.6.32-573.12.1 and the newer 2.6.32-573.12.1.
I can see the problem on both physical and virtual servers.
You can see the Load Average chart here from one of our servers: http://imgur.com/U1eihMX
The server is pretty much idle all the time, but the load average
increased from 0.001 to 0.300 when updated to the new kernel.
Is anyone else seeing the same behavior?
This is one of the fixes listed on the errata page:
"Due to prematurely decremented calc_load_task, the calculated load (snip)"
From: https://rhn.redhat.com/errata/RHSA-2016-0494.html
No idea if that is impacting the load shown on your machine .. maybe someone has some ideas.
An RHEL user is reporting what seems to be the same issue:
https://access.redhat.com/discussions/2247501
Akemi