A global memory buffer is allocated per EC. The size of the buffer is specified using an Execution Context property in the EC's configuration file located in the relevant container.

Note that this global backlog memory buffer is used and shared by this and any other forwarding agent that transfers files to a remote server. The same memory buffer is used for all ongoing transactions on the same EC.

When several workflows are scheduled to run simultaneously, and the forwarding agents are assigned with the backlog function, there is a risk that the buffer may be too small. In such a case, it is recommended that you increase the size of this property.

<property name="mz.forwarding.backlog.max_memory" value="20"/>

If no property is set the default value of 10 MB is used. The amount allocated is printed out in the EC's log file. This memory does not affect the Java heap size and is used by the agent when holding a copy of the file being transferred.