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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: <cygwin AT cygwin DOT com>
Subject: RE: side effects of Cygwin's maximum memory test
Date: Tue, 3 May 2005 15:37:50 +0100
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In-Reply-To: <d5819v$c8i$1@sea.gmane.org>
Message-ID: <SERRANOHc9ny7BXx4XF000001c3@SERRANO.CAM.ARTIMI.COM>
X-OriginalArrivalTime: 03 May 2005 14:37:49.0928 (UTC) FILETIME=[AE413680:01C54FED]

----Original Message----
>From: Jani Tiainen
>Sent: 03 May 2005 15:26

> Dave Korn kirjoitti:

>>> On May  3 00:25, Utku Ozcan wrote:
>>> 
>>>> I *think* that the test below, which tests memory allocation limit of
>>>> Cygwin *might* produce problems in Windows XP:
>>>> 
>>>> http://sources.redhat.com/cygwin/cygwin-ug-net/setup-maxmem.html
>>>> 
>>>> In this page, I have compiled the C code, and after having run the
>>>> compiled executable, Windows XP gave suddenly a warning that virtual
>>>> memory setting has been changed (I think, that repeated malloc() calls
>>>> in this code somehow change the virtual memory settings in Windows
>>>> XP).

>>   Interestingly enough, there _is_ some kind of problem here.    I
>> haven't been hit by any HD problem, but when I tried the test program,
>> it gave me an ever-increasing series of values, and then suddenly
>> stopped working altogether and wouldn't recover!
> 
> Interesting enough.. I get consistent 1536MB allocation. But some times
> maxmem freezes machine for a while... No leak detected..

  I need to reboot to get my machine to work properly again!

  Is your machine set to allow windows to manage the paging file size?  I
have a fixed allocation of exactly 2Gb, and have disabled the "System
managed size" option; perhaps this is the difference between your machine
and mine.  The pauses you describe certainly seem likely candidates for
'doze to be growing the pagefile.



    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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