Parameter: CONNECTION_WRITE_BUFFER

Definition

Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation

Description

This system parameter defines the number of write buffers used by a rater or a guider instance to send messages to a dispatcher instance for internal communications.

This parameter is used to control the data flow between instances in a running SAP CC system. For example, you can increase this parameter if a rater or a guider instance handles a large quantity of responses to send to a dispatcher instance.

Advanced Tuning

The number of write buffers is by default set to 3. During the implementation project or the production operation phase, you can however change this value from 3 to 1,000 depending on the data flow between SAP CC system instances.

The metric 'ConnectionStatistics' can help you to determine the number of write buffers by indicating how much time has elapsed before an instance can write a message in an empty buffer. If this time increases, you must increase the number of write buffers.

See Also

• CONNECTION_INTERNAL_WRITE_BUFFER

Detailed Information

Name	CONNECTION_WRITE_BUFFER Do not use this parameter, except under SAP Support Team supervision or under specific recommendation provided within the SAP CC documentation
Category	Parameter
Type	Integer
Access (RO/RW)	RW(+): Dynamic Read / Static and Dynamic Write An immediate change is possible but is temporary. When it is relevant, change the permanent settings used by the SAP CC system when it restarts. Use the Admin+ user interface to change the runtime values or the permanent values of this system parameter in an instance of the SAP CC system or in multiple instances.
Group(s)	Tuning: Throughput and Latency, System: Network and Communication
System Instances	This system parameter is available in the following types of instances in a running SAP CC system: guider, rater
Default Values (Factory Settings)	guider 3 rater 3
Constraint(s)	The SAP CC system checks the following constraints: guider The parameter must be less than or equal to 1000 The parameter must be greater than or equal to 3 rater The parameter must be less than or equal to 1000 The parameter must be greater than or equal to 3