SUMMARY: Can't increase tty's

From: Nienkark, Royal D (
Date: Tue Sep 12 2000 - 08:32:53 CDT

Original question:

> Has anyone had problems increasing pseudo terminals on Solaris 2.6? We put: set pt_cnt=128 in /etc/system, then did a boot -r.
> We checked pt_cnt with adb after the boot, and it was still at 48, the default. No errors were generated during the boot.
> Any help would be greatly appreciated.

Thanks to all who replied. Most suggested also setting the following parameters:


I was also directed to a FAQ by Casper Dik of Sun on He basically stated these parameters did not have to
be set; only pt_cnt was needed. He was very adamant about this fact. He felt these were irrelevant 99.9% of the time.

The final solution was offerred by Sun. We use Disksuite and one of our root mirrors needed maintenance. Apparently this can cause
some kernel parameters not to take. We didn't get a great explanation of what was happening. After syncing the mirrors and rebooting
pt_cnt showed 128.

> Thanks,
> Royal Nienkark
> Client Server Administration-UNIX
> (425) 865-5443

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