The facility for parallel writes in deferred write processing is a function that enables multiple processes to execute deferred write processing. Because multiple processes perform write processing, the facility reduces the amount of the time required to write to disk. For details about the facility, see the HiRDB Version 9 Installation and Design Guide.

Specifying the facility for parallel writes in deferred write processing

Specify in the pd_dfw_awt_process operand the number of parallel WRITE processes for deferred write processing that can perform write processing. Additionally, specify in the pd_dbbuff_rate_updpage operand the request rate of the deferred write trigger. If the pd_dfw_awt_process operand is not specified, the facility for parallel writes in deferred write processing does not become effective.

Considerations about using the facility

Use of the facility for parallel writes in deferred write processing increases CPU usage, because of the increase in the number of processes.