| Title: | DECmcc user notes file. Does not replace IPMT. |
| Notice: | Use IPMT for problems. Newsletter location in note 6187 |
| Moderator: | TAEC::BEROUD |
| Created: | Mon Aug 21 1989 |
| Last Modified: | Wed Jun 04 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 6497 |
| Total number of notes: | 27359 |
Hi,
I have a configuration question for DECmcc T1.2.4 on ULTRIX 4.2A.
In the "Planning and Installation for ULTRIX" document it is written
that you need a minimum of 24 MB of memory and 100 MB of swap file per
user. I am quite new under ULTRIX, so I would like some precisions
about those limits. Does those 24 MB includes all the ULTRIX and network
stuff, is it an "easily" reachable limit ? About the swap file : what
is an user ? Is it an iconic map user, a FCL user, with lot of alarms
...
I use this DECmcc version on a DECstation 5000-25 with 16M of memory and
one RZ25 disk (426M) with 65M of swap file. We set up the kernel as
specified in the installation documentation. The response time is quite
bad.
Fran�ois EBLE.
EIS Strasbourg France.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 2372.1 | User=UID. You need more memory. | TOOK::MINTZ | Erik Mintz, DECmcc Development, dtn 226-5033 | Wed Feb 19 1992 13:33 | 30 |
> user. I am quite new under ULTRIX, so I would like some precisions
> about those limits. Does those 24 MB includes all the ULTRIX and network
> stuff, is it an "easily" reachable limit ?
24 Mb is a minimum for the ULTRIX O/S and DECmcc for ULTRIX.
As to whether it is "easily" reachable, depends what you mean by reachable.
As you set up more alarms, or historical recording, etc, you will need
more resources (especially memory) to maintain performance.
> About the swap file : what is an user ?
> Is it an iconic map user, a FCL user, with lot of alarms
A user is a unique UID running DECmcc.
The swap space requirement is based on the number of management modules
running at the same time. Since multiple PMs (FCL or Iconic Map) sessions
running under the same UID share single copies of the management modules,
you only need to expand your swap space when you add more UIDs.
...
> I use this DECmcc version on a DECstation 5000-25 with 16M of memory and
> one RZ25 disk (426M) with 65M of swap file. We set up the kernel as
> specified in the installation documentation. The response time is quite
> bad.
With only 16Mb of memory, your system performance is degraded badly
because of swapping. Furthermore, with a 65 Mb swap partition, you must
not yet be running all of the management modules. At some point you will
try a new function, and it will fail (and likely with an unhelpfull error
message, unfortunately), due to the lack of swap space.
| |||||
| 2372.2 | And with a DECstation 3100 ? | STRASB::EBLE | Thu Feb 20 1992 05:29 | 8 | |
Hi,
thanks for those informations. Now I could get a DECstation 3100 with
24 Mb of memory. It's easier to get it than to fight to have a memory
expansion ... But, is this solution better ? In other words is the 3100
CPU fast enough for DECmcc ?
Thanks.
| |||||
| 2372.3 | We use DS-3100s | TOOK::MINTZ | Erik Mintz, DECmcc Development, dtn 226-5033 | Thu Feb 20 1992 07:30 | 3 |
We are running DECmcc on some 24 Mb DS-3100s here in development. My guess is that having the memory is more important than having the faster CPU, but that is not based on any systematic measurement. | |||||