[Pacemaker] Pacemaker 10-15% CPU.

[Vinod Prabhu]

can u look at the files under /var/lib/pacemaker/pengine
these files are generated at periodic intervals.. From these u can know the
reason.
Are the CPU levels continuously high?

On Fri, Oct 30, 2015 at 3:01 PM, Karthik <Karthikeyan.Ramasamy at ericsson.com>
wrote:

> Hello,
>   We are using Pacemaker to manage the services that run on a node, as part
> of a service management framework, and manage the nodes running the
> services
> as a cluster.  One service will be running as 1+1 and other services with
> be
> N+1.
>
>   During our testing, we see that the pacemaker processes are taking about
> 10-15% of the CPU.  We would like to know if this is normal and could the
> CPU utilization be minimised.
>
> Sample Output of most used CPU process in a Active Manager is
>
> USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
> 189      15766 30.4  0.0  94616 12300 ?        Ss   18:01  48:15
> /usr/libexec/pacemaker/cib
> 189      15770 28.9  0.0 118320 20276 ?        Ss   18:01  45:53
> /usr/libexec/pacemaker/pengine
> root     15768  2.6  0.0  76196  3420 ?        Ss   18:01   4:12
> /usr/libexec/pacemaker/lrmd
> root     15767 15.5  0.0  95380  5764 ?        Ss   18:01  24:33
> /usr/libexec/pacemaker/stonithd
>
> USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
> 189      15766 30.5  0.0  94616 12300 ?        Ss   18:01  49:58
> /usr/libexec/pacemaker/cib
> 189      15770 29.0  0.0 122484 20724 ?        Rs   18:01  47:29
> /usr/libexec/pacemaker/pengine
> root     15768  2.6  0.0  76196  3420 ?        Ss   18:01   4:21
> /usr/libexec/pacemaker/lrmd
> root     15767 15.5  0.0  95380  5764 ?        Ss   18:01  25:25
> /usr/libexec/pacemaker/stonithd
>
>
> We also observed that the processes are not distributed equally to all the
> available cores and saw that Redhat acknowledging that rhel doesn't
> distribute to the available cores efficiently.  We are trying to use
> IRQbalance to spread the processes to the available cores equally.
>
> Please let us know if there is any way we could minimise the CPU
> utilisation.  We dont require stonith feature, but there is no way stop
> that
> daemon from running to our knowledge.  If that is also possible, please let
> us know.
>
> Thanks,
> Karthik.
>
>
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