Appendix D. Persisting Solaris Network Tunings

In Chapter 9, Troubleshooting Techniques, we saw how to change different network tuning parameters for different operating systems. This appendix details what is necessary to persist these changes on Solaris 10 and above.

The following script is what is actually run by the Service Management Framework (SMF) to set the network parameters with ndd. Save it as /lib/svc/method/network-tuning.sh and make it executable so that it can be run at any time on the command line to test:

# vi /lib/svc/method/network-tuning.sh

The following snippet is the content of the /lib/svc/method/network-tuning.sh file:

#!/sbin/sh
# Set the following values as desired
ndd -set /dev/tcp tcp_max_buf 16777216
ndd -set /dev/tcp tcp_smallest_anon_port 1024
ndd -set /dev/tcp tcp_largest_anon_port 65535
ndd -set /dev/tcp tcp_conn_req_max_q 1024
ndd -set /dev/tcp tcp_conn_req_max_q0 4096
ndd -set /dev/tcp tcp_xmit_hiwat 1048576
ndd -set /dev/tcp tcp_recv_hiwat 1048576...