This section explains tuning of the buffer length for registry information (pd_registry_cache_size operand value).

Information to be referenced

See the following system activity statistical information provided by the statistics analysis utility:

• Registry cache hits count (# OF REGISTRY CACHE HIT)
• Number of registry information acquisition requests (# OF REGISTRY GET REQ)

Tuning procedure

Determine the registry cache hit rate using the following formula, and adjust the buffer length to achieve a hit rate of 100%:

Registry cache hit rate (%) =

(registry cache hits count registry information collection requests count) 100

Actions to be taken

Increase the value of the pd_registry_cache_size operand.