SUMMARY: Socket Tuning on Solaris 2.5.1/2.6

From: Mark Lundy (mlundy@sprintcorp.com)
Date: Fri May 08 1998 - 07:41:25 CDT


Thanks to the group again. Here's the summary: ndd command is the
hands down favorite.

Mark

From: Dan Dunn <dunn@gsfc.nasa.gov>
From: Rahul Roy <uroy@eadev1.vanguard.com>

        The ndd command is used to tweak TCP/IP parameters. Changes made
        using ndd are lost when the system is rebooted. To make the changes
        permanent add the ndd command to an rc script.

From: "Auteria Wally Winzer Jr." <wally.winzer@ChampUSA.COM>
        Pick up Adrian Cockcroft's new Sun Performance and Tuning Book:
        Java And The Internet: Second Edition.

From: Gerald Combs - Unicom Communications <gerald@unicom.net>
          Try running 'ndd /dev/tcp \?'. To get a particular value, run ndd on
        that value, e.g. 'ndd /dev/tcp tcp_conn_req_max_q'. Changing a value can
        be done with the '-set' flag. Ndd can also change ip and udp options via
        /dev/ip and /dev/udp. The man page has more info.

          I have a script in /etc/init.d on most of our machines that sets various
        TCP and IP parameters when the system starts up. I can send you a copy if
        you'd like.

From: David Harte <davidh@hos.horizon.ie>
        Increase rlim_fd_cur to 256 and rlim_fd_max to 1024



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