Interstage Shunsaku Data Manager Troubleshooting - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

1.3.5 Checking and Handling Performance Problems

Refer to the procedure below to identify the problem event and to solve the performance problem.

Refer to the following procedure if data has been updated or deleted:

• An imbalance of data in the searchers
• Fragmentation rate of the director data files

If the above procedures cannot be applied, refer to the following procedure to identify the event:

• General checking (investigate each process)

An imbalance of data in the searchers

Shunsaku's search speed depends on the searcher with the most data. Check the amount of data in each searcher with the procedure below. Redistribute the data If there is a large imbalance in the amount of data allocated to each searcher.

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

   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 confirm that data is now evenly distributed:

   shundstate -s director identifier -p

Refer to Redistributing Search Data in the Operator's Guide for more details.

Fragmentation rate of the director data files

If large amounts of data are deleted or updated, the fragmentation rate of the director data files (the rate of the amount of wasted areas) will increase and search performance will drop.

Follow the procedure below to check and optimize the fragmentation rates:

1. Execute the shundstate command to check the fragmentation rate:.

   shundstate -s director identifier -w

2. If the fragmentation rate is high, execute the shundcds command to optimize the director data files:

   shundcds -s director identifier

3. Execute the shundstate command again to check that the fragmentation rate is 0% after the director data files is optimized:

   shundstate -s director identifier -w

Refer to Optimizing Director Data Files in the Operator's Guide for more details.

General checking (investigating each process)

If the above procedures cannot be applied, execute the shuncstate command to collect connection information. Then identify the problem and take the necessary action. Refer to 1.5 Handling Performance Problems for more information on general action for performance problems.

Example: Displaying the current connection status

shuncstate -s shunc -c

Refer to the Command Reference for more information on the commands.

If the application has already finished the process or a full investigation is needed, refer to the performance log to identify the problem. Refer to 3.2.3 Performance Log Files and Output Information of Performance Log in the Operator's Guide for more information on the performance log and its location.

Contact the application developer if there is a problem with the application.

For information on how to collect the information, refer to 3.7 Collecting Information for Performance Trouble. If the cause cannot be identified using a command or if a full investigation on the Shunsaku system is needed, contact a Fujitsu systems engineer.