Interstage Shunsaku Data Manager Operator's Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

4.3.1 Redistributing Search Data

Search data must be redistributed if a large imbalance develops in the amount of data allocated to each searcher due to data deletions, additional searchers, or some other reason.

Redistributing search data ensures that data is allocated evenly to each searcher.

Shunsaku's search speed depends on the searcher with the most data. If the amount of data allocated to each server is uneven, redistributing search data will equalize the data distribution and reduce the maximum amount of data allocated to any one searcher, thereby improving search performance.

The following diagram shows an example of an operation pattern where search data is redistributed.

[Figure : Example of Operation Pattern where Search Data is Redistributed]

Use the following procedure to redistribute search data.

[Figure : Procedure for Redistributing Search Data]

1. Execute the shundstate command to check the amount of data allocated to each searcher from the information for connected searchers.

   shundstate -s director identifier -p

2. If the amount of data allocated to each searcher is uneven, execute the shundresend command to redistribute search data.

   shundresend -s director identifier

3. Execute the shundstate command again to check that data is now evenly distributed to each searcher from the information for connected searchers.

   shundstate -s director identifier -p

Refer to Appendix E, Conflict Relationships for more information on the shundresend command and on conflict relationships between applications and commands.

Refer to 6.2.3 Monitoring Director Operation Information for more information on the content displayed by the shundstate command.