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Batch interval (BATCHINT)

 

The batch interval is a period of time, in milliseconds, during which the channel will keep a batch open even if there are no messages on the transmission queue. We can specify any number of milliseconds, from zero through 999 999 999. The default value is zero.

If you do not specify a batch interval, the batch closes when the number of messages specified in BATCHSZ has been sent or when the transmission queue becomes empty. On lightly loaded channels, where the transmission queue frequently becomes empty the effective batch size may be much smaller than BATCHSZ.

We can use the BATCHINT attribute to make your channels more efficient by reducing the number of short batches. Be aware, however, that you may slow down the response time, because batches will last longer and messages will remain uncommitted for longer.

If you specify a BATCHINT, batches close only when one of the following conditions is met:

• The number of messages specified in BATCHSZ have been sent.

• There are no more messages on the transmission queue and a time interval of BATCHINT has elapsed while waiting for messages (since the first message of the batch was retrieved).

BATCHINT specifies the total amount of time that is spent waiting for messages. It does not include the time spent retrieving messages that are already available on the transmission queue, or the time spent transferring messages.

This attribute is valid for channel types of:

• Sender

• Server

• Cluster sender

• Cluster receiver

 

Parent topic:

Channel attributes in alphabetical order

ic11550_

 

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