I have had MapInfo 4.5 through 7.0 using Win 95a-c, WinNT 4.0 Workstation, Win2000 and Windows XP Pro, using McAfee AV and it's fine. No issues, I do regularly delete the .tmp files from my user defined MapInfo temp directory and get rid of legend files, etc.

With regards to SMP (multiprocessor systems) I have run MapInfo on Win NT 4.0 workstation dual PIII machine and Win XP Pro on a dual P4 Xeon with Hyperthreading turned on. As long as you keep in mind that the first two CPU's when you see CPU's listed in the task manager where you have one graph per CPU) are physical CPU's and the last two are logical (virtual CPU's) which are each the result of the hyperthreaded nature of the P4 processor. What I do, is go into the processes 'tab' and select the mapinfo.exe and set the affinity to either the first or second processor or sometimes the first and second. In my experience there are a few functions in Mapinfo that will use most of two processors for brief intervals (seconds or minutes) depending on the job.

You could always try assigning the virus scanner and MapInfo to different CPU's via their affinity.

Anyways good luck figuring out the virus scanning thing.


----- Original Message ----- From: "Commander" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Monday, June 20, 2005 23:04
Subject: RE: MI-L MapInfo and Anti-Virus scanners?


-----Original Message-----
From: Doug Cubin [mailto:[EMAIL PROTECTED]
Sent: Tuesday, 21 June 2005 12:55 AM
To: Commander
Subject: RE: MI-L MapInfo and Anti-Virus scanners?

Well, Commander, I havent heard of any AV software creating problems for
MapInfo.  In fact, windows is full to the brim with running processes
(!) all of which would be monitored.  I have used Norton and AVG.  Both
of these have never caused any problems in any software.  What is your
AV software?

Is there a particular process where it always crashes? If so, have you
run that process with and without the AV running?

Also, check your temporary folder - is there enough space? Is it
littered with .TMP files?  (I have found that MI crashes when it
generates too many TMP files)

I would be wary about exempting any folders from a virus scan.  There
are just too many viruses, trojans etc. out there and its not worth the
risk.

<snip>

We're using etrust AV, and I'm only excluding the processes and
files/directories from the real-time scanner, the schedule scanner will
still do a full scan. It's not a manger risk and it's common practice
for "problem software" to have exclusions in the AV. I'm not too
concerned about that.

Where does MapInfo put all it's .tmp files?

The crashes don't appear to be reliably reproducible but are very
regular and common, the process I've seen crash is MAPINFOW.EXE.

Also does anyone know if MapInfo has issue's with SMP kernels? (Multiple
Processor or Hyper Threaded PC's)

Thanks
Marcus

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