AIX-RT 2.2.1 login delay

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2 total messages Started by Pete Gregory Wed, 15 Aug 1990 23:05

#842

Author: Pete Gregory
Date: Wed, 15 Aug 1990 23:05

16 lines
1112 bytes

Hi - 

I would like to know the source/cause for the delay between logout and
the next login: prompt.  On our system it is five to ten seconds.

Is this delay changeable/removable?  Ignorant minds want to know....

Again, we have 6150/135 RT's running AIX 2.2.1...

Pete Gregory           : uucp:   uunet!bally!pete              |
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Re: AIX-RT 2.2.1 login delay

#845

Author: Joe Greco
Date: Thu, 16 Aug 1990 16:22

56 lines
3365 bytes

In comp.sys.ibm.pc.rt article <339@bally.Bally.COM>, pete@bally.Bally.COM (Pete Gregory ) wrote:
:I would like to know the source/cause for the delay between logout and
:the next login: prompt. On our system it is five to ten seconds.
:
:Is this delay changeable/removable? Ignorant minds want to know....
:
:Again, we have 6150/135 RT's running AIX 2.2.1...

No experience with AIX, but on our RT running AOS we encounter similar
delays - and something even stranger.

My understanding of how-it-all-works is that when a session terminates, init
(pid 1) catches a signal, updates wtmp, and then spawns a getty. I'm not
sure which step is most responsible for the delay, but as you can see there
are several places it could occur.

We have an even more interesting problem: we're using an auto-baud rate
determining getty which apparently DIES after a short period. A lastcomm
reveals the following pattern:

getty S root tty00 0.03 secs Thu Aug 16 08:41
getty S root tty03 0.03 secs Thu Aug 16 08:41
getty S root tty01 0.06 secs Thu Aug 16 08:41
getty S root tty02 0.03 secs Thu Aug 16 08:41
getty S root ttyc0 0.03 secs Thu Aug 16 08:41
getty S root tty00 0.05 secs Thu Aug 16 08:41
getty S root tty03 0.03 secs Thu Aug 16 08:40
getty S root tty01 0.05 secs Thu Aug 16 08:40
getty S root tty02 0.06 secs Thu Aug 16 08:40
getty S root ttyc0 0.03 secs Thu Aug 16 08:40
getty S root tty00 0.05 secs Thu Aug 16 08:40
getty S root tty03 0.05 secs Thu Aug 16 08:40
getty S root tty01 0.05 secs Thu Aug 16 08:39
getty S root tty02 0.05 secs Thu Aug 16 08:39
getty S root ttyc0 0.05 secs Thu Aug 16 08:39
getty S root tty00 0.06 secs Thu Aug 16 08:39
getty S root tty03 0.05 secs Thu Aug 16 08:39

This is not optimal behaviour IMHO. We're using a Gandalf PACX, and I'm not
sure where the fault lies. ttyc0 is not attached, so I'm suspecting that
auto-baud is at fault. Anyways, I don't think much can be done about the
delay. If you Really Need a login prompt right away, put an

exec login

at the end of everyone's logout script. ;-) Might even work.

... Joe

-------------------------------------------------------------------------------
Joe Greco - University of Wisconsin, Milwaukee - Department of Mathematics
jgreco@archimedes.math.uwm.edu USnail: Joe Greco
Voice: 414/321-6184 9905 W. Montana Ave.
Data: 414/321-9287 (Happy Hacker's BBS) West Allis, WI 53227-3329
#include <witty_and_humorous_saying.h>
Disclaimer: I don't speak for the Math Department, the University, or myself.

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