With SAP note 3515065 – Load Balancing Analysis, SAP delivers a new load balancing analysis tool.
Prerequisites
There are 2 prerequisites for the new load balancing analysis tool to work:
- Install OSS note 3515065 – Load Balancing Analysis
- Make sure snapshot monitoring is active (read this blog on activation)
Running the tool
To start the tool go to transaction SE38 and start program /SDF/RSLOADANALYSIS.
Selection screen:
Select the date range you want to analyze. The delta factor is normally 10 but bit too low. Increase it for more realistic result. This is factor to conclude if balancing is ok or not. Only 10% difference from average is too idealistic.
Output screen has 3 parts.
The first part is the load balancing analysis.
An overview is given on batch server groups, logon groups and RFC server groups. You can see which groups are defined, and how they are distributed over the application servers.
The second part is the work process analysis part.
Here you can see how load is distributed over the application servers using the snapshot monitoring statistics. The central instance can be excluded from the load balancing and hence show as ‘not balanced’.
The third part is host machine data.
Here you can see if the servers are having equal CPU power and memory. If no data for a sever: check in ST06 if it is configured properly.
It can be that CPU and memory are identical, but that older infrastructure was used. Then the CPU and mem look the same, but there can still be significant difference in CPU speed and memory speed. To rule this out, run the ABAPMETER tool.