linux-kernel - Re: Full lockup when compiling kernel with "optimal" number of threads

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Message-ID: <4E8982E3.9080809@linux.vnet.ibm.com>
Date:	Mon, 03 Oct 2011 15:09:47 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Pavel Ivanov <paivanof@...il.com>
CC:	ecryptfs@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Full lockup when compiling kernel with "optimal" number of threads

On 09/03/2011 09:04 AM, Pavel Ivanov wrote:
> Hi,
> 
> I can reliably reproduce a complete machine lockup when compiling
> kernel sources with "make -j". After making some progress machine
> stops responding to anything (including CapsLock/NumLock switching or
> mouse moving) and after hard reboot nothing is left in kern.log or
> syslog. Only attaching a serial console gives me the following clues
> to what happens:
> 
By the way "optimal" is supposed to be make -j <nr_cpus*2> isn't it?
IIRC, "maximal" refers to make -j


-- 
Regards,
Srivatsa S. Bhat  <srivatsa.bhat@...ux.vnet.ibm.com>
Linux Technology Center,
IBM India Systems and Technology Lab
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