Sysload: What are RPI

Products

• CA Automic Sysload

Issue/Introduction

The RPI (Relative Performance Index) is the ability to compare CPU consumption between different systems (AIX, Windows ...)

What are RPI (Relative Performance Index)?

Environment

Sysload Agent

Resolution

• The traditional unit for looking at processor information is percentage
• Percentage information is acceptable when comparing values sharing the same base:

• %CPU of processes on the same machine

• %CPU of servers with the same processor characteristics

• It becomes impossible to correlate information when comparing percentage values from different bases:

• %CPU of a dual core server vs. %CPU of server with 8 cores

• The Relative Performance Index (RPI) is a unit used by Sysload to enable comparison of:

• Processor capacity

• Server processor usage
• Processor usage by workloads running on servers with different processor capacities

Additional Information

You can set the automatic RPI dectection in the Collector configuration file.
 

[METAMETRICS_RULES] Automatic_RPI_Detection #Format               : Boolean #Optional/Mandatory   : Optional #Set by default to "1" by the program #Console labels (EN)   : Section "Performance Index""Automatic RPI"

You can manually set the parameter:
 

[METAMETRICS_RULES] PerformanceIndex #Format               : Integer on 10 digits #Optional/Mandatory   : Optional #Set by default to "1000" by the program #Console labels (EN)   : Section "Performance Index" "Performance Index"

For more detail please refer the documentation.