X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=0.5 required=5.0	tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE
X-Spam-Check-By: sourceware.org
Message-ID: <4CF70266.4050709@qwestoffice.net>
Date: Wed, 01 Dec 2010 19:20:22 -0700
From: tsteven4 <tsteven4 AT qwestoffice DOT net>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: tcsh out of memory and core dump
References: <4CF3A393 DOT 3060807 AT qwestoffice DOT net> <20101129205708 DOT GA18309 AT calimero DOT vinschen DOT de>
In-Reply-To: <20101129205708.GA18309@calimero.vinschen.de>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On 11/29/2010 1:57 PM, Corinna Vinschen wrote:
> On Nov 29 05:58, tsteven4 wrote:
>> I can readily reproduce a tcsh error "Out of memory", however the
>> timing is variable.  In my actual application the time to failure
>> varies from seconds to hours.  I have a test case that seems to be
>> able to reproduce the error.
>>
>> The symptom of the error is a message like:
>> 188
>> ./test2
>> 189
>> ./test2
>> 190
>> ./test2
>> 191
>> tcsh current memory allocation:
>> free:       0  119   52   25   29   23   17    3    0    2    0    0
>> 2    0    0    0    0    0    0    0    0    0    0    0    0    0
>> 0    0    0
>> used:       0    9  204  167   51   33   19    3    1    1    2    2
>> 1    4    3    0    0    0    0    0    0    0    0    0    0    0
>> 0    0    0
>>          Total in use: 788560, total free: 100272
>>          Allocated memory from 0xab0000 to 0xffffffff.  Real top at 0xb89000
>> nbytes=32784: Out of memory
>> Abort (core dumped)
>> 192
>> ./test2
>> 193
>> ./test2
>> 194
>> ./test2
>> 195
>> ./test2
> Thanks for the testcase!  It helped me to track down a memory leak in
> Cygwin which occurs on each dup/dup2/dup3 call on a tty.  This is done
> very often in tcsh and thus affects long-running scripts quite heavily.
>
> I applied a patch to CVS.  Please test the next Cygwin developer snapshot
> from http://cygwin.com/snapshots/, which will contain the fix.
>
>
> Thanks again,
> Corinna
>
Corinna,

I tested today's snapshot and the tcsh memory issue appears to be 
fixed.  Thank you for the very speedy resolution.

Steve

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple