Maxusers

From: Trevor Stott <trevor.stott_at_sheridanc.on.ca>
Date: Tue, 18 Jun 1996 12:01:32 -0400 (EDT)

Hi Everyone,
        I've been looking into the Maxusers parameters on all of our
systems and never considered 1024... We have 100+ interactive users on
one system with Maxusers at 128. Another system has a Maxusers parameter
of 256 with approximatly 52 gigs of data, no interactive, and approximatly
200+ people nfs mounting their home directory throught the use of the
bwnfsd. From what I understand you can't hurt the systems performance
through upping maxusers unless it is grossly overstated. I'm curious to
know if you take a performance hit as a result of upping it to 1024...
Unfortunatly I can't seem to find any literature with examples to specific
setups that you can use to make an educated guess. Any suggestions?
Thanks! (both systems are dec 3000/600 with 128 meg of ram)

                                                                See Ya!

BTW: Does anyone know of any books specific to Digital Unix? Does
      Digital itself sell any good ones?

-------------------------------------------------------------------------
Date: Sat, 16 Mar 1996 13:58:03 +0100
From: Laurent Flamand <flamand_at_eclia2.ec-lille.fr>
To: alpha-osf-managers_at_ornl.gov
Subject: [SUMMARY] NO more Telnet


hi all,
the message was :

> i'm on a alpha 2100 4/275 512MO ram 13Go hd
> the maxusers flag is set at 64
> i ran out of available telnet connection
> then i used PTY_2 ;3 & 4
> but it didn't changed the situation.

> thank's.

First I thank all the people who answer to the questions.
the os was 3.2D

The answers :
I )
You have to increment the "pseudo-device pty" value in the
/sys/conf/mips/<MACHINE> file and rebuild (and reboot) your kernel. The new
devices you made are not seen by your kernel.

anyway, there are a few things you want to do.

1) more more ptys.
   -- su - root
   -- cd /dev
   -- ./MAKEDEV pty3
   -- ./MAKEDEV pty4
   -- ./MAKEDEV pty5
  
2) recompile the kernel. up maxusers by a lot. (it's not actually a
   measurement of users, but a number used to then calculate various
   resource allocations).

  I have maxusers set to 1024. we typically have 40-60 simultaneous
  users, as well as a bunch of other processes.

3) install the new kernel and reboot


this should solve your problems.

good luck,
Jason

II )
        Try this:

        # cd /dev
        # ./MAKEDEV pty2 (not PTY_2)

It'll work fine.

                                                Marcelo.

| Marcelo Fabian Beltramo e-mail m_beltramo_at_scomp1.sonda.cl
                                    Sonda Computacion S.A T.E.
                                    Alsina 772 (541) 334-1775 334-1793
                                    Buenos Aires, Argentina FAX
                                       C.P. : 1087 (541) 343-3561
                 

III)
Bonjour,

Il faut que les ptys soient contigues. Il faut donc faire un
MAKEDEV PTY_1 afin d'avoir la suite des pty0 et pty1 crees a l'install
du systeme.
CF: /dev/MAKEDEV
.
.
PTY_1)
    devlist="$devlist pty0 pty1 pty2 pty3 pty4 pty5 pty6 pty7 pty8 pty9
pty10 pty11 pty12 pty13 pty14 pty15 pty16 pty17 pty18 pty19
pty20 pty21 pty22"
.
.

Pour des renseignements complementaires vous pouvez passer un appel
au CSI france 69 87 41 23 .

Cdlt
Xavier WUILQUE
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| ULTRIX/OSF/SUNOS Support | Telecopie: +33 1-69-87-60-65 |
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----------------------------------------------------------------------
Ma reponse engage ma seule responsabitite .


Laurent Flamand Flamand_at_eclia2.ec-lille.fr
Centre de Ressources Informatiques tel 20.33.53.47
Ecole Centrale de Lille
BP 351
59651 Villeneuve d'Ascq cedex
Received on Tue Jun 18 1996 - 18:48:43 NZST

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