From: Jolet, John (John.Jolet@MISYSHEALTHCARE.COM)
Date: Fri Jun 14 2002 - 17:30:18 EDT
okay, after much exhaustive research.....here's where I am....someone please
tell me if i'm going astray here....what happens if stty-cxma says CD is
asserted, but there's a getty running on that port? These ports are all
LOGIN=enable. I'm thinking that that port is not going to be usable....
I did find one modem that mon-cxma said was cd asserted and RD was lit, but
the modem didn't have those lights lit....I haven't checked the others.
I've got 86 modems that show CD asserted with stty-cxma, but only 30 or so
are doing anything.
-----Original Message-----
From: Adams Kevin J [mailto:kevin.adams@PHS.COM]
Sent: Monday, June 10, 2002 4:20 PM
To: aix-l@Princeton.EDU
Subject: Re: tty usage
John,
This fairly new "redpiece" goes into some detail about your subject. It
might be of some help.
http://publib-b.boulder.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg246606.html
?Open
According to this redpiece, if tty is "-" it means it's not ready, i.e., no
DSR or DCD.
Kevin Adams
-----Original Message-----
From: Jolet, John [mailto:John.Jolet@MISYSHEALTHCARE.COM]
Sent: Monday, June 10, 2002 1:41 PM
To: aix-l@Princeton.EDU
Subject: [aix-l] tty usage
okay, i'm about ready to give up.....i've got about 100 incoming phone lines
going into a bank of modems, thence into some rans that come into a couple
of 128-port asynch adapters. I've got a bunch of ttys defined for these
incoming calls. Lately, my customers have been complaining that they are
getting busy signals...
So, a couple of questions...How do I determine how many modems are actually,
legitimately in use? I've been graphing the datapoints generated by a
who|grep tty|wc -l and it appears that we never get more than 80 people
loggedon via ttys. So i've been looking into why not? It appears we have
some ttys that appear odd...for instance, tty5.....lsof on /dev/tty5 says no
one's using it...on tty61, which has a getty running, lsof shows the getty.
on tty5 (and a bunch of others), if you look carefully at a ps -ef, you see
a getty running for /dev/tty5, but the column for tty is "-". on tty61, it
shows 61.
Am I way off track here? shouldn't all these gettys be attached to the tty?
why is this happening and how do I make it stop? And could this be why i'm
getting reports of busy signals? because we really only HAVE 67 ttys
willing to talk to people, not over 100 like we're supposed to? Some of the
modems (rack-mount) show online, but there's no process on the rs/6000
talking to them...
If a modem that's penabled is supposed to have a getty attatched to it, i
can make this script find them and kickstart them, but I wanted to make sure
that it needed to have the tty number in the tty column of the ps if it was
gettying properly :-)
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