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Re: 256mb limit in cygwin - heap_chunk_in_mb not working?


"It worked for me." It was a long time ago, though, on a system far, far away.

Are you sure you're setting the correct registry entry? I noticed that in my registry the Cygwin keys appear in more than one place, perhaps because of the history of installations I've done or perhaps owing to one of those a per-user vs. system-wide registry things (I don't know a whole lot about the registry).

Randall Schulz
Mountain View, CA USA

At 05:57 2002-08-08, Dylan Cuthbert wrote:
No replies to this for about a week and we're stumped at this end - does
anyone know whether this cygwin registry key is *intended* to work or not?
Is this a bug or simply an unimplemented feature?  Is it a limitation
somewhere higher up (lower down) than cygwin (in the w32 process heap
manager or something?)

Ive seen plenty of mails regarding this and this is the only solution listed
(no "it worked!" confirmation mails however).  I can't see what's wrong, I'm
putting the registry key in the right place and everything, I've even logged
in as administrator and made sure the key is set in that environment too.
Has anyone allocated more than 256 megs in a cygwin compiled app?


Dylan Cuthbert.

"Dylan Cuthbert" <> wrote in message
> Hi all
> I have edited/created the DWORD registry entry heap_chunk_in_mb (the ls of
> /proc/registry is below) and it reads 512 in regedit.
> I reboot but still a simple program that does new char[ 256 * 1024 * 1024 ]
> will run out of memory.
> AFAIK I am using the recent versions of absolutely everything. (cygcheck
> below)
> Any ideas what's going on, I want to run some memory intensive algorithmic
> programs and can't because of this problem.
> Regards
> ---------------------------------
Dylan Cuthbert

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