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Sidney, thanks a lot.
Information such as this is enormously valuable to computer challenged users
such as myself.
I crave this kind of information. Ron D
----- Original Message -----
<BLOCKQUOTE
>
<DIV
>From:
Sidney
Kaiser
To: <A title=AmiBroker@xxxxxxxxxxxxxxx
href="">AmiBroker@xxxxxxxxxxxxxxx
Sent: Friday, June 27, 2003 12:46
PM
Subject: [amibroker] PT and memory
usage
I am running a Portfolio Trader scan this morning and
thought this information might be helpful to other users.PT scan,
16 iterations on ~280 stocks for 6 months: I have had memory
problems with this scan so I decided to monitor what was going on by using
the Windows Task Manager, ( win 2k, win xp ) cntl-alt-delete to
invokeI was not sure AB was running so I started there.WTM
processes tab: sure enough Broker.exe was getting 98% of the CPU
cycles.To check the memory usage go to the WTM Performance tab: the
interesting things here is the Page File usage chart and the Physical
Memory statistics.At first you can watch the executing programs eat up
your physical (RAM) memory. It sucked down my 1024 Mb of RAM to
about 5Mb before it started to do serious disk swapping for temporary
storage. At the moment the scan is still running and the Page File
usage is up to 1.75 Gb. If you run out of Page File space the
program will crash with (probably) an out of memory error
message.You can monitor your system to see how a big scan is
doing. If you have some spare HD space you can increase the Page
File size.Note: exit all running programs before you attempt changing
the Page File size or you may regret the resulting occasional
crash...start/control panel/system/advanced/performance
settings/advanced/virtual memory change/The recommended
settings at the bottom of the page will probably be too small. Use
the custom setting to increase the min/max Page File settings.
At the moment I am using 2Gb min and 4 Gb max. Reboot to have the
settings take effect.CheersSidSend
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