Thanks to:
Casper Dik
Sean Quaint
Dan @ dtn.com
The answer was simple, I just had to get to the faq and read it. The
answer from Casper Dik is posted below.
Thanks for the answers
>I have a question about limits to concurrent logins on Solaris 2.6
>
>We have a ss20 here that will not allow more than 50 concurrent users
>to be logged in at the same time. Is there some limitation on
solaris
>that causes this, or is it a licensing issue that I have to call Sun
>about?
>
>If there is a limitation that needs to be modified, can someone
please
>help me find where this limit is, and change it to a higher number?
>
The solaris FAQ says:
3.41) How can I have more than 48 pseudo-ttys?
Edit /etc/system and add the following line:
* System V pseudo terminals
set pt_cnt = <num>
Halt the system and boot -r.
You can essentially have as many as you like, but you'll probably
run into some other limit somewhere. More than 3000 are
supported.
Solaris 2.6 and earlier have telnet/rlogin daemons that do not
support more than 3844 sessions each. That restriction is lifted
in Solaris 7.
Some die-hard system administrator myths as well as some Sun
documentation claim that you have to increased "sad_cnt", "sadcnt"
or "nautopush" when adding ptys. There is no truth in this.
In the unlikely event that you run out of BSD-style ptys,
you can increase them as well. The maximum here is currently
176 for pty[p-z][0-9a-f]. This is somewhat less that the BSD
maximum of 256 limited by 8 bit device minor numbers.
BSD ttys are awkward to use and all programs I found support SYSV
ptys without trouble.
* You don't need this. Increasing this value too much usually
* just wastes memory.
* BSD applications never support more than 256 ptys.
* Solaris 2.x supports no more than 176 BSD ptys.
set npty = <num>
But you're not there yet, you also need to edit /etc/iu.ap and
substitute the new value of "npty-1" for the "47" on the following
line, in case you do increase the number of BSD style ptys.
ptsl 0 47 ldterm ttcompat
Halt the system and boot -r.
--- end of excerpt from the FAQ
Questions marked with a * or + have been changed or added since
the FAQ was last posted
The most recently posted version of the FAQ is available from
<http://www.wins.uva.nl/pub/solaris/solaris2/>
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