HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

Load Balancing (One Multiple Core Server, One Operating System
Instance)
While the HP-UX scheduler does a good job of utilizing multiple cores when they are available,
sometimes you need (or want) to override the default scheduling algorithms, for example to
dedicate processing resources to an important application.
When your server is equipped with more than one core, the technologies in the load balancing
category can help you precisely allocate the resources of multiple cores and other processing
resources (memory, disk I/O bandwidth). These technologies include:
• Process Resource Manager (PRM)
• Processor Sets (PSETS)
• Workload Manager (WLM)
• Instant Capacity (iCAP/TiCAP/GiCAP)
• Pay per use (PPU)
Process Resource Manager (PRM)
Technology Summary
Process Resource Manager (PRM) is a resource management tool used to control the amount of
resources that processes use during peak system load (when the server is at 100% core, 100%
memory, or 100% disk bandwidth utilization).
24 HP-UX Virtualization Technologies