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Date:	Sat, 18 Dec 2010 22:51:18 +0100
From:	Ulf-Dietrich Braumann <braumann AT uni-leipzig DOT de>
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To:	cygwin AT cygwin DOT com
Subject:	Re: DWORD "heap_chunk_in_mb" and CYGWIN_NT-5.2-WOW64
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Hi,

I need to revise my problem report some weeks ago. Actually, the "Changing 
Cygwin's Maximum Memory" explanations under 
http://www.cygwin.com/cygwin-ug-net/setup-maxmem.htm recommending 
something like

regtool -i set /HKLM/Software/Cygwin/heap_chunk_in_mb 2048
regtool -v list /HKLM/Software/Cygwin

do work under Windows Server 2003 64bit. And exactly, 
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Cygwin is that place where the 
abovementioned regtool invocation will place "heap_chunk_in_mb".

Sorry for having bothered you some time ago, I did something wrong that 
day (no idea what). The max_memory check program now returns 1792MB 
accessible memory.

Regards - Ulf-Dietrich


On Wed, 10 Nov 2010, Ulf-Dietrich Braumann wrote:

> Hi,
>
> it is maybe no surprise that the advice for changing cygwin's maximum 
> memory given under http://www.cygwin.com/cygwin-ug-net/setup-maxmem.html 
> does not work under Windows Server 2003 64bit, i.e. the max_memory.c 
> check program always returns 1536MB available memory, no matter if I 
> place the DWORD "heap_chunk_in_mb" (I want 2048MB) in the 
> HKEY_LOCAL_MACHINE or the HKEY_CURRENT_USER registry branch. And yes, I 
> always have restarted the whole server to give cygwin a chance to read 
> the variable.
>
> During my search I have found some Cygwin entries in a branch 
> HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Cygwin, so I have tried to place 
> the "heap_chunk_in_mb" there, but got no effect.
>
> Does anybody know where to correctly place the DWORD "heap_chunk_in_mb" 
> on a Windows Server 2003 64bit running CYGWIN_NT-5.2-WOW64?
>
> Thanks a lot - Ulf-Dietrich
>

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