-Dcom.ibm.net.rdma.tcpFallbackWaitTime (Linux® only)

Use this system property to configure the time period that an RDMA-enabled Java™ application server must wait before the server allows a remote TCP client to connect.

Note: The RDMA implementation is deprecated and will likely be removed in a future release of IBM® SDK, Java Technology Edition, Version 8. A possible alternative is the open source Libfabric library.

This system property must be used with -Dcom.ibm.net.rdma.tcpFallback, which enables TCP communication on an RDMA server. If -Dcom.ibm.net.rdma.tcpFallback is not set to true, this system property is ignored.

Specify the time to wait in milliseconds, by using the following syntax:

-Dcom.ibm.net.rdma.tcpFallback=<milliseconds>

The time that is specified must be between 20 milliseconds and 10 seconds. If the value specified is outside of this range, a warning message is issued and the value is reset to the lower or upper limit.

If the value specified is not valid, a warning message is issued and the default value is set.

If a value is not provided, the default value is set.

The default value is 100 milliseconds.

For more information about enabling TCP communications on an RDMA system, see -Dcom.ibm.net.rdma.tcpFallback (Linux only).