Intel AS/400 RISC Server ユーザーズマニュアル

improve performance by eliminating disk I/O operations.

y If communications lines are involved in the batch application, try to limit the number of

communications I/Os by doing fewer (and perhaps larger) larger application sends and receives.
Consider blocking data in the application.  Try to place the application on the same system as the
frequently accessed data.

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IBM i 6.1 Performance Capabilities Reference - January/April/October 2008

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 Copyright IBM Corp. 2008