Installation guide

AT-2971 Solaris Sparc
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Tuning
This section describes settings that affect network performance. Also
refer to the description of the CopyThreshold parameter above.
The TCP/IP protocol stack of Solaris can be tuned to better suit high
speed network adapters. This tuning is executed with the "ndd" tool.
The startup script /etc/rcS.d/S50skge is created during installation and it
sets some of the TCP parameters.
More improvement can be achieved by further increasing e.g.
tcp_xmit_hiwat and tcp_recv_hiwat when using Jumbo Frames. But this
also increases the memory consumption per TCP stream and the effect
depends on the type of application.
If you need this last bit of optimization, please refer to the man page of
'ndd' and find the best settings for your system by experimenting with
different settings.