nddtune: Solaris SMF ndd tuning for settings not settable in /etc/system

LICENSE See LICENSE for licensing details

REQUIREMENTS: Solaris (10+)

INSTALLATION Copy the nddtune method to the method directory (/lib/svc/method) Make the nddtune method executable Copy the nddtune manifest to the manifest directory (/lib/svc/manifest/system) Import the manifest: svccfg import /lib/svc/manifest/system/nddtune.xml

Note: Alternatively, you can copy them to a different location, in which case you must update the manifest to reflect the true location of the method repository for the 'start' exec_method.

USAGE: Standard SMF commands (enable, disable, refresh). Note: nddtune currently does NOT implement the disable action (ie, it cannot restore previous values).

CONFIGURARTION The default configuration file is /local/etc/nddtune.cfg but its location can be changed by updating the nddtune/cfgfile property, either by updating the manifest before importing it or by using svccfg setprop:

svccfg -s svc:/system/nddtune setprop nddtune/cfgfile=/location/for/nddtune.cfg

The configuration itself is simply the parameters to a ndd -set call. For example:

/dev/tcp tcp_xmit_hiwat 2883584 /dev/tcp tcp_recv_hiwat 2883584 /dev/tcp tcp_max_buf 2883584

Lines can be commented out with a # sign at the beggining of the line.

ERROR HANDLING Check svcs nddtune for service state. nddtune is fairly conservative: if anything causes an error (missing configuration file, error runnig ndd -set), nddtune stops and sets the service to maitenance status. See svc logfile for details.

SOURCE: https://github.com/ning/nddtune