X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Message-ID:	<13006193.post@talk.nabble.com>
Date:	Tue, 2 Oct 2007 12:29:03 -0700 (PDT)
From:	wimxa <wimxa AT yahoo DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Huge memory leak, probably related to making new processes
MIME-Version:	1.0
X-Nabble-From:	wimxa AT yahoo DOT com
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

Try executing:

find -exec echo {} \;

Simple command. This one, however, leaks at about 5kB/s. I tried the
following:

find|xargs echo

This one didn't appear to leak, but then I tried this one:

find|xargs -n 1 echo

This also leaked at around the same rate. Then I tried the following:

COUNTER=1
while [ $COUNTER -lt 123456 ]; do echo $COUNTER; let COUNTER=$COUNTER+1;
done

This one did not leak, making me believe that this is related to new process
execution. I tried this:

COUNTER=1
while [ $COUNTER -lt 123456 ]; do (echo $COUNTER); let COUNTER=$COUNTER+1;
done

and it started leaking pretty fast (maybe 4kB/s).

I searched for this, but I couldn't find anything useful (or I couldn't find
any good search queries). A few questions: 
- Is this a bug or am I just wrong in part or the whole of the above?
- If so, is there a way to prevent or circumvent this?
- Again, if it is a bug, is there a way to free this memory somehow without
restarting the computer (or anything involving closing all/majority of
applications, like logout)? It appears that no process "owns" this memory,
but it is disappearing (i.e. true leak), so a simple taskkill is not a
solution.


-- 
View this message in context: http://www.nabble.com/Huge-memory-leak%2C-probably-related-to-making-new-processes-tf4557470.html#a13006193
Sent from the Cygwin Users mailing list archive at Nabble.com.


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

- Raw text -