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Date: Wed, 22 Aug 2012 19:52:01 +0100
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Subject: [gentoo-user] xz memory hungry?
From: Jorge Almeida <jjalmeida@gmail.com>
To: gentoo-user@lists.gentoo.org
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# tar -xJvf /usr/portage/distfiles/m4-1.4.16.tar.xz
xz: (stdin): Cannot allocate memory
tar: Child returned status 1
tar: Error is not recoverable: exiting now

The box has 2G ram + 1G swap. I'm installing Gentoo from an existing distro.
Emerging fails on m4. tar xJvf fails both from within the chroot and from the
host system. top shows that nothing is using any amount of memory worth
mentioning. Extracting libtool-2.4.tar.xz works. I can extract
m4-1.4.16.tar.xz in a computer with 4G ram. This is ridiculous. Not gentoo
related, except that I have no choice, as m4 is pulled by other packages.
What to do?

app-arch/xz-utils-5.0.3 in chroot
xz 5.0.4 in host system (Archlinux)

TIA

Jorge Almeida