Ganglia on IBM POWER systems "Best Practices"

On this page I describe my view how Ganglia could be used best on IBM POWER5/6 systems.

Some things to consider before you start:

Best Practices

Best Practices – Preferred Setup

Best Practices – Ganglia Sampling Intervals

Important to know:

Example: Default settings in Ganglia

RRAs "RRA:AVERAGE:0.5:1:240"    \
     "RRA:AVERAGE:0.5:24:240"   \
     "RRA:AVERAGE:0.5:168:240"  \
     "RRA:AVERAGE:0.5:672:240"  \
     "RRA:AVERAGE:0.5:5760:370"

Translation:

Example: 1-minute sampling for one year

RRAs "RRA:AVERAGE:0.5:4:525600"

Translation:

Example: 1-minute sampling for 6 months, 5-minute sampling for 2 years

RRAs "RRA:AVERAGE:0.5:4:259200"  \
     "RRA:AVERAGE:0.5:20:210240"

Translation:

Example: 15-second sampling for 1 day, 1-minute sampling for 2 months, 10-minute sampling for 1 year

RRAs "RRA:AVERAGE:0.5:1:5760"   \
     "RRA:AVERAGE:0.5:4:86400"  \
     "RRA:AVERAGE:0.5:40:52560"

Translation:

Example: 1-minute sampling for 2 months, 5-minute sampling for 6 months, 15-minute sampling for 3 years

RRAs "RRA:AVERAGE:0.5:4:86400"   \
     "RRA:AVERAGE:0.5:20:51840"  \
     "RRA:AVERAGE:0.5:60:105120"

Translation:

Best Practices – Default Ports

Ganglia by default uses the following ports:

Best Practices – Shared Ethernet Adapter Statistics

Question: How to monitor SEA statistics on the VIO server ?
Solution: Extension through gmetric via a shell script

Best Practices – Fibre Channel Statistics

Question: How to monitor Fibre Channel statistics on the VIO server ?
Solution: Extension through gmetric via a shell script

Best Practices – Enhanced Web Interface

Please take a look at http://www.perzl.org/ganglia/webinterface.html.