Re: System performance slowdown during massive logon/logoffs (173 Views)
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Occasional Visitor
Howard Walls
Posts: 1
Registered: ‎11-05-2000
Message 1 of 4 (173 Views)

System performance slowdown during massive logon/logoffs

Our company uses a HP989/450 MPEiX 6.5. We are migrating the majority of users from terminals on DTCs to PC workstations using Reflections 8.01 for connectivity. The maximum number of VTSERVERS allowed is more than double the number of active VTSERVER users. We currently support users in different time zones. Our problem occurs during massive logons/logoffs. The system overhead degrades system performance of users/jobs active during the logons/logoffs. How can the effect of massive logons/logoffs be minimized?
Honored Contributor
Kwan Fong, Emile
Posts: 1,162
Registered: ‎07-10-2000
Message 2 of 4 (173 Views)

Re: System performance slowdown during massive logon/logoffs

Logon/Logoff invoke create/kill process, open/close files (Logon udcs) and MPE/iX is designed in such a way that high priority is allocated. That will allow interactive users to initiate/terminate sessions quickly.
King is the customer!
Respected Contributor
Mike Hornsby
Posts: 106
Registered: ‎05-26-2000
Message 3 of 4 (173 Views)

Re: System performance slowdown during massive logon/logoffs

You should increase the minservers to create a pool of vtserver processes for then number of sessions that you expect. For example if you know that the average number of sessions will be about 250 then you should:

NSCONTROL START;SERVER=VTSERVER,250

SERVER={servername}[,minservers][,maxservers]

This tells NS to pre-create this number of server processes and not to kill them when the users disconnect.

Another feature to check out is the NEWCI command. On 6.5 this helps to cut down on the number of processes per session and thus eliminates one process to kill when the session disconnects.

Honored Contributor
Chuck Ciesinski
Posts: 830
Registered: ‎10-03-2000
Message 4 of 4 (173 Views)

Re: System performance slowdown during massive logon/logoffs

I would like to add on to Mike's recommendation that you issue the command to pre-allocate your VTSERVERs as part of your procedures when you
start your network. It works well within a command file and can be secured so only your sysadmin's and operators can do it.
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