DB2 10.5 for Linux, UNIX, and Windows

wlm_disp_cpu_shares - Workload manager dispatcher CPU shares configuration parameter

This parameter enables (YES) or disables (NO) the control of CPU shares by the DB2® workload manager (WLM) dispatcher. By default, an enabled WLM dispatcher controls only CPU limits.

Configuration type

Database manager

Applies to

Database server with local and remote clients
Database server with local clients
Partitioned database server with local and remote clients

Parameter type

Configurable Online

Propagation class

Immediate

Default [range]

NO [NO; YES]

When upgrading DB2 database manager, the value of the wlm_disp_cpu_shares database manager configuration parameter is NO.

If the value of the wlm_dispatcher database manager configuration parameter is set to YES and the value of the wlm_disp_cpu_shares database manager configuration parameter is set to YES, the WLM dispatcher can apply both CPU limits and CPU shares to the management of service classes. By default, all service classes are assigned 1000 hard CPU shares to ensure an equal division of CPU resources.

Table 1. Summary of required database manager configuration parameter settings for service class management by the DB2 WLM dispatcher
Service class management	Setting of wlm_dispatcher	Setting of wlm_disp_cpu_shares
None	NO	NO
CPU limits	YES	NO
CPU limits + CPU shares	YES	YES