James Hogan wrote:

>> From time to time we have customers who break a Unidata
> parameter and the
> program they are running will crash with errors such as "No
> more entries in
> MI table in 'LCT -n'".

[snip]

> I have had a look at the commands "sms", "gstt" and "lstt".
> With some clever
> scripting these could be used to take snap shots of the
> system periodically
> to check for an over step of the parameters. The script could
> then warn the user if any parameter is over 80% utilised.

I doubt it could warn them in time James.  When programs go wild and eat smm
resources they tend to do it in a big hurry.

With decent tuning you should be able to find a reasonable compromise
between making lots of memory available for big jobs without lumbering
little jobs with a huge footprint.  Even on AIX now there are some extended
shared memory facilities which allow you to have more segments instead of
just making them all huge!  I can't remember the exact details but EXTSHM
rings a bell.

Cheers,

Ken


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