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AIX 5L Practical Performance Tools and Tuning Guide by IBM Redbooks

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9.3. A comparison of WLM and PLM

AIX offers two methods of vertical server consolidation: workload management with Workload Manager, and partitioning, of which the most recent development is shared processor logical partitions (Micro-Partitioning technology) with PLM. This section compares these two approaches.

With the introduction of shared processor logical partitions (SPLPARs) and PLM, partitions are approaching the flexibility and granularity of WLM classes in their responses to changing load, while providing the additional security of separate operating systems. The sections below compare WLM classes and SPLPARs in terms of their ability to dynamically provision resources (CPU, memory and I/O) to applications, and the features they provide. ...

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