Re: [BLACKBOX] More memory management problems

From: [at]} <shristov>
Date: Tue, 28 Jun 2011 17:24:59 +0200

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As as second thought, I think that Wojtek's explanation does not apply.



Consider the following experiment.





start Windows XP, start Task manager:

  physical memory: total 3145196 K, available 2725404 K



Run BlackBox:

  physical memory available 2720632 K, BlackBox memory usage 7604 K



Compile "PrivLarge" module:

  physical memory available 2721464 K, BlackBox memory usage 8076 K



Run "Do" procedure first time:

  physical memory available 2487748 K, BlackBox memory usage 242920 K



Run "Do" procedure second time:

  physical memory available 2487748 K, BlackBox memory usage 242920 K (no change)



Run "Do" procedure third time:

  physical memory available 2491160 K, BlackBox memory usage 242916 K (4 K less)



Compile "PrivLarge" again and unload it:

  physical memory available 2726200 K, BlackBox memory usage 8540 K
  BlackBox released 240 MB after unloading the module.



Try to run "Do" procedure results in "not enough memory":

  physical memory available 2726472 K, BlackBox memory usage 8540 K (no change)





This shows that unloading actually removes the module from memory,

leaving BlackBox with only 8.5 MB occupied.



But after that, there is plenty of available memory (far more than "2 GB/process" limit),

but BlackBox thinks there is "not enough memory" to run a 240 MB module.



Looks like BlackBox has a limit on allocating more than ~300 MB since the startup,

REGARDLESS of memory being released in between.





Sinisa

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Received on Tue Jun 28 2011 - 17:24:59 UTC