Re: [BLACKBOX] memory allocation limits

From: [at]} <Robert>
Date: Tue, 22 Jan 2008 22:14:15 +0000

----boundary-LibPST-iamunique-139262647_-_-
Content-type: text/plain

Yes.

In old versions is was about 400 MByte, but has been increased to 1.5 GByte.

I think it is defined in Kernel.AllocHeapMem with the line:

   CONST M = 1536 * 100000H; (* 1.5 GByte *)

I wonder if it could be safely increased to, say, 1.8 GByte?

(How does one recompile the Kernel which, I guess, is linked into BlackBox.exe?)


I have used all 1.5 GByte; the Allocated Memory figure in the Status bar
sometimes exceeds 1'600'000'000 Bytes. Allocation time can be considerable (many
seconds) for heap sizes greater than about 1'000'000'000 Bytes. When using
large memory I allocate all I need (can) when the Module is loaded, and
subsequently do minimal deallocation & reallocation. I allocate it in many
chunks of a few tens of kilobytes.

This applies to XP machines with 2 GByte of physical RAM, and XP64 machines with
more than 2 GByte.

I don't know anything about the differences with 'dlls's.

Robert


A Thomas wrote:
> Hei Blackbox people,
>
>
>
> Are there any limits to how much heap memory can be allocated in
> BlackBox? Maybe this is really two questions because memory allocation
> seems different for .exe and .dll. Having a swap file does not sound
> like a good idea with garbage collection. Has anyone got experience of
> allocating lots of objects on the heap, say getting heap sizes of 500MB
> or 1000MB? Is there anything in module Kernel I can change to allow
> bigger heaps?
>
>
>
> Thanks
>
>
>
> Andrew
>
> ---- To unsubscribe, send a message with body "SIGNOFF BLACKBOX" to
> LISTSERV{([at]})nowhere.xy
>
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.516 / Virus Database: 269.19.9/1237 - Release Date: 22/01/2008 11:04

----
To unsubscribe, send a message with body "SIGNOFF BLACKBOX" to LISTSERV{([at]})nowhere.xy----boundary-LibPST-iamunique-139262647_-_-
Content-type: application/rtf
Content-transfer-encoding: base64
Content-Disposition: attachment; filename="rtf-body.rtf"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----boundary-LibPST-iamunique-139262647_-_---

Received on Tue Jan 22 2008 - 23:14:15 UTC