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Date Posted: 16:38:46 11/10/04 Wed
Author: David
Subject: Re: Memory usage
In reply to: Mike B 's message, "Memory usage" on 12:59:40 04/15/04 Thu

>I know this has probably been covered many times
>before, but I need to know some options. Envision
>uses massive amounts of memory (depending on image
>size, of course). I understand that it is because the
>entire image is in memory, but this is killing me.
>Opening a given map in my software at 100% is using
>upwards of 350MB of memory in the task manager. Using
>a competitors software, the same image uses about 48MB
>- zooming does not effect this. Otherwise their
>software sucks, but there is no way mine is going to
>work worth a damn on anything but high end computers.
> So how do they do that and what are my options with
>Delphi? Thanks.


I am having a similar problem. My images are 1 MB in size but I need to load 3 sets of 4 so my memory usage is aproaching 300 MB as well. After an hour - 1 1/2 hours windows reports a virtual memory error and the application hangs causeing all sorts of problems.

I have tracked memory usage usint Task manager and have used the C++ Builder 6 Code Guard feature and have found no evidence of a memory leak. (Memory released after processing an image set is consumed by the next set and have seen no gradual increase in memory consumption.)

The systems are all 512MB with 1GB virual memory files on W2K.

If I can't get around this soon I may have to rewrite the program around a different library and I have no desire to do that.

Please help,

Regards,

David

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