X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=QhnI7M7VbBXwKM6I8AF2NILVmq2pflSmZFtm16uC3FjLPIBisF1DY
	IphGf5uxknhtJumKsZul5K0jRgBmJKrIJ2XCit/jBCqeQGSTRKByecoEslQj9a4n
	2w8pvC+v3lk94sT0eZXP9HcbKNp2fjfTt/LlMlEkZO0/PMtYtt/oC8=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	 bh=EjP7e7HO2B31O4y46ncPuu/sSKw=; b=JxafJ8BouNEMHXU5UF4XIxALLhw3
	kV9+HTR35BCqnxoVDZZ2n4GYnhlRkBgG1mnSX8TQxBJosY4oZCIFsxXdBb0g7qH/
	TSkEtVeqXaRlcyt8woEbgYP5TMpUHXUA1QYUbmzje/dsZS8qmkQSnwPeBgTKs5Rv
	kMW6kQzVfo9amCM=
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
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-3.7 required=5.0 tests=AWL,BAYES_50,KHOP_PGP_SIGNED,NO_RELAYS autolearn=ham version=3.3.2
X-HELO: calimero.vinschen.de
Date: Thu, 29 Aug 2013 17:11:21 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: xz -9 : Cannot allocate memory
Message-ID: <20130829151121.GR21571@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <50A41697 DOT 3080406 AT tiscali DOT co DOT uk> <loom DOT 20130829T155739-66 AT post DOT gmane DOT org> <loom DOT 20130829T162752-851 AT post DOT gmane DOT org>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;	protocol="application/pgp-signature"; boundary="rJ8inJ6ig7iY3YX9"
Content-Disposition: inline
In-Reply-To: <loom.20130829T162752-851@post.gmane.org>
User-Agent: Mutt/1.5.21 (2010-09-15)

--rJ8inJ6ig7iY3YX9
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Aug 29 14:34, Achim Gratz wrote:
> Achim Gratz <Stromeko <at> NexGo.DE> writes:
> > With the initial heap size set to 1MB, the same allocations for mmap wo=
rk
> > just fine.  The mmap length used by xz is the same for files of all siz=
es.
>=20
> The large mmap is for the scratchpad memory of xz, which can be limited v=
ia
> the -M option.  Currently it fails when this gets larger than 616MiB
> (standard for -9 is 674Mib).

I'm not exactly surprised.  You're on a 32 bit machine, so you only have
2 Gigs VM.  Probably some DLLs are in the way.  Load xz under GDB, break
on "cygwin_exit", run it, and when it hits the breakpoint, observer the
memory layout, either in GDB, or by cat'ing /proc/<xz's pid>/maps.
Observing the memory layout helps a lot to understand why there's some
memory problem, especially if the application tries to get a big buffer
space in a single chunk.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--rJ8inJ6ig7iY3YX9
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)
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=kSuX
-----END PGP SIGNATURE-----

--rJ8inJ6ig7iY3YX9--