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Date: Wed, 22 Oct 2014 08:07:44 +0200
From: magnum <>
Subject: Re: System freeze while building john(bleeding) on Laptop.

On 2014-10-22 08:03, Sayantan Datta wrote:
> Using: make clean --makefile=Makefile.legacy  linux-x86-64-opencl.
> The build process use all cores and RAM usage hits alarming levels,
> spilling over to swap space.  The HDD may not be such a good conditions and
> might be the cause of system hangs.
> Is there a way to minimize the number of core use and memory use during
> build process?

The command you mentioned should only use one core. I have no idea what 
happens (sounds like a loop) but legacy builds are almost not supported 
anymore. Use ./configure and just "make -s" instead. For four cores 
you'd add -j4 too.


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