IBM FileNet P8, Version 5.2.1            

Increasing the maximum number of TCP connection requests on a Solaris operating system

You can control the number of TCP connection requests in the server queue by adjusting the value of the Solaris tcp_conn_req_max_q parameter.

The tcp_conn_req_max_q parameter value specifies the maximum number of TCP connection requests that the server can queue up after establishing a successful connection (handshake) with a client.

The parameter default value is 128. Increasing this parameter value causes a single TCP connection to handle more requests before using another TCP connection. By making this adjustment, other open TCP connections are available longer to for Java™ to use.
Attention: Each open TCP connection occupies some memory (usually both bookkeeping tables and buffer space), so fewer TCP connections are available to other processes. However, the memory footprint is a minor concern for enterprise-class servers with large amounts of available RAM.
Run the following command to adjust the maximum number of TCP connection requests that the server can queue, where 128 is a value that is appropriate for your environment: nddset /dev/tcp tcp_conn_req_max_q 128


Last updated: March 2016
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