AIX prompt delayed when users increase Post: 302990905

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Homework and Emergencies Emergency UNIX and Linux Support AIX prompt delayed when users increase Post 302990905 by bakunin on Thursday 2nd of February 2017 02:26:07 PM

02-02-2017

Registered User

Quote:

Originally Posted by ggayathri

Can someone suggest a way to overcome this situation?

Maybe, but to do so we need to know more about the system:

How many is an "increased number" of users? (no exact number required, but are we talking about 10, 100 or 1000 users here?)

What is the size of the system? How many processors? How much memory? Have you tried a vmstat -tw 1 in a time of many users? also a vmstat -vs might help. If so, please post significant portions of the outpput here (within CODE-tags).

How is the name resolution done? We had "network problems", where the network was working fine but the name server took a long time to answer so that the connection seemed to be made slowly. Overall, can you describe you network a bit (in case the culprit is there)?

How is your system used by the many users you describe? Are they using a certain application, working on the command line mainly, do they only connect via the application layer (like a database running on the server and your users use DB Visualizer or a similar tool to connect to it)?

This is - off the top of my head - all i can come up with. Please provide a few more data and we take it from there.

I hope this helps.

bakunin

/PS: seems like i am not typing fast enough to catch up with Don. ;-)

bakunin

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LEARN ABOUT DEBIAN

fgetty

FGETTY(8)						   System Administrator's Manual						 FGETTY(8)

NAME

       fgetty - a small getty for linux

SYNOPSIS

       fgetty tty [--noclear] [--long-hostname]

DESCRIPTION

       The command fgetty is normally invoked by init(8), opens a tty port, prompts for a login name and invokes the /bin/login command.

OPTIONS

       --noclear makes fgetty not clear the screen before displaying the login prompt.

       --long-hostname makes fgetty display the full hostname in the login prompt.

FILES

       /etc/issue	printed before the login prompt
       /etc/inittab	init(8) configuration file
       /var/run/utmp	the system status file

ISSUE ESCAPES

       The  issue-file	(/etc/issue  or  the file may contain certain escape codes to display the system name, date and time etc. All escape codes
       consist of a backslash () immediately followed by one of the letters explained below.

       d      the current date. (eg: 2002-01-19)

       s      the system name, the name of the operating system. (eg: Linux)

       l      the name of the current tty line. (eg: tty3)

       m      the architecture identifier of the machine (eg: i586)

       n      the nodename of the machine, also known as the hostname. (eg: sirius)

       o      the domainname of the machine. (eg: (none))

       r      the release number of the OS. (eg: 2.4.3-i)

       t      the current time. (eg: 14:51:51)

       u      the number of current users logged in. (eg: 4)

       U      the string "1 user" or "<n> users", where <n> is the number of current users logged in. (eg: 4 users)

       v      Insert the version of the OS. (eg: #2 Fre Jan 18 23:05:45 CET 2002)

ENVIRONMENT VARIABLES

       HOST    is set to your hostname
       TERM    is set to linux
       TTY     is set to the current tty line

RETURN VALUES

       1     could not chown/chmod tty device
       3     could not open tty device
       4     not a typewriter
       5     vhangup failed
       6     could not open tty (can't happen)
       7     dup failed
       8     could not exec login
       9     read returned an unexpected error
       10    unprintable character in login name
       11    login name too long (>40)

       13    user name started with a dash
       23    received SIGQUIT

AUTHOR

       Felix von Leitner <felix-fgetty@fefe.de>

       Homepage: http://www.fefe.de/fgetty/

fgetty								    2002-01-19								 FGETTY(8)