[Pacemaker] resource monitor priority - timeout on high load

Radoslaw Garbacz radoslaw.garbacz at xtremedatainc.com
Mon Oct 5 13:53:25 EDT 2015


I have a situation, when resource monitor operations timeout on system high

One thing to do is to increase timeouts, but there can always be load, at
which the timeout event would happen, and on the other hand too long
timeouts would not be very useful, so I would like to increase the priority
of monitoring processes (GNU Linux), but I do not want to be too broad.

So my question is, which pacemaker process should I target to ensure timely
monitoring operations, or maybe even there is a pacemaker configuration
parameter, which would help in such a case.

I know for sure, that agents finish they monitoring requests on time, and
the timeout is due to high load. I have several agents, so I will provide
just some details to illustrate the case:
- timeout: ~60s
- interval: ~60s
- normal (low load) monitor request time: 0.2s
- high load monitor request time: 8s - when pacemaker reports resource
operation timeout


Best Regards,

Radoslaw Garbacz
XtremeData Incorporation
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