[comp.unix.ultrix] pty's

mbrookov@diana.cair.du.edu (Matthew B. Brookover) (04/08/91)

I have a DECsystem 5400 running Ultrix 4.1.  We have installed the
65+ capicity upgrade.  I created 64 pty's and tty's with /dev/MAKEDEV,
and then added them to /etc/ttys and then did a kill -HUP 1 to make
init read the changes to /etc/ttys.

For some unknown reason the system will only use the firs 32 pty's, that is
pty/tty p* and pty/ttyq* then rlogin will fail with the message:
	rlogind: Out of ptys.
and telnet fails with the message:
	telnetd: All network ports in use.

The MicroVax // running Ultrix 4.1 and the same capicity upgrade will let
me use as may pty's as I want, unfortunatly it does not have the CPU power
of the 5400.

has any body else ran into this?  any suggestions to fix it?

Thanks for the assistance.

						Matt
-- 
Matthew B. Brookover
Computing and Information Resources
University of Denver
mbrookov@diana.cair.du.edu

mbrookov@diana.cair.du.edu (Matthew B. Brookover) (04/08/91)

In article <1991Apr7.200722.20811@mercury.cair.du.edu> mbrookov@diana.cair.du.edu (Matthew B. Brookover) writes:
>I have a DECsystem 5400 running Ultrix 4.1.  We have installed the
>65+ capicity upgrade.  I created 64 pty's and tty's with /dev/MAKEDEV,
>and then added them to /etc/ttys and then did a kill -HUP 1 to make
>init read the changes to /etc/ttys.

the kernel config file must be modified to get more than 32 ptys.  change the
line
	pseudo-device pty
to
	pseudo-device pty 64

the guide to configuration file maintenance says that the number must be an
increment of 16.

My thanks to the people who responded.

							Matt
-- 
Matthew B. Brookover
Computing and Information Resources
University of Denver
mbrookov@diana.cair.du.edu