peflags makes perl not print to stdout

[Reini Urban]

On 09/27/2012 09:14 AM, Saurabh T wrote:
> Hi, I asked this before and havent gotten a reply. Is there any other
> information I can provide? This is currently quite a bummer for me. Any
> help will be greatly appreciated. Thanks.
>
> ----------------------------
>
> From: saurabh
> To: cygwin
> Subject: peflags makes perl not print to stdout
> Date: Mon, 24 Sep 2012 17:29:42 +0000
>
> I have been trying to get perl to use 2GB of memory (this
> is on a 32 bit xp machine with 4 GB total memory). As per
> http://cygwin.com/cygwin-ug-net/setup-maxmem.html I tried
> peflags --cygwin-heap=2048 /usr/bin/perl
>
> However this causes perl to not write to screen.
> On further investigation, I found the magic number to be 1040:
>
> $ peflags --cygwin-heap=1039 /usr/bin/perl
> /usr/bin/perl: initial Cygwin heap size: 1039 (0x40f) MB
>
> $ perl -e 'print "Hello\n";'
> Hello
>
> $ peflags --cygwin-heap=1040 /usr/bin/perl
> /usr/bin/perl: initial Cygwin heap size: 1040 (0x410) MB
>
> $ perl -e 'print "Hello\n";'
>
> In other words, anything 1040 and above, perl stops writing to screen.
> I have the latest cygwin (1.7.16) and perl (5.14.2).
> Any idea what might be wrong? Thank you.

Yes, strange.
I'm not aware of any heap magic or IO limits within perl.
(contrary to clisp or other binaries using a copying gc).
It's pure malloc, and it memory and io is purely dynamic.

If cgf has no idea either you need to ask that on p5p.


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