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Date:      Sat, 31 May 2014 08:29:23 -0700
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        freebsd-ppc@freebsd.org
Subject:   Re: Odd failures during parallel PPC builds
Message-ID:  <5389F553.80302@freebsd.org>
In-Reply-To: <538992B4.8030209@gmail.com>
References:  <5388B184.4050309@freebsd.org> <538992B4.8030209@gmail.com>

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Have you tried with HEAD? I'm doing that routinely and it works fine. 
How many/which CPUs are in your machine? How much RAM?
-Nathan

On 05/31/14 01:28, Jukka Ukkonen wrote:
> Hi all,
>
> I sent the question below to Peter Grehan a few days ago.
> He told me that he has not seen the symptoms I had found
> possibly because he does ppc cross-builds on amd64.
> I have tried to maintain my amd64, ppc, and sparc64 systems
> as independent as possible. Usually I cross-build only my
> R-PI on amd64.
> Now it seems I have found something going wrong with
> parallel make on ppc such that the same symptoms cannot
> be reproduced on an amd64 platform.
>
>> I just wonder am I the only one to see odd failures during
>> parallel builds on a 32-bit ppc system with "make -j #" in
>> which # >= 2. Has anyone else noticed similar symptoms?
>> The make version is apparently bmake. The OS version I have
>> used is 10-stable.
>> When I use the traditional 1 process at a time approach
>> with PPC builds everything comes out just fine, though,
>> about 1,5 times slower on a 2 core system.
>>
>> On a 12 core amd64 "make -j 60" is just fine, but on
>> a 2 core ppc "make -j 2" often seems to be too much.
>> I have no idea of the root cause yet. I am just confused.
>> This has anyhow been going on for a few weeks now. So, I
>> assume someone else might have already noticed something
>> similar.
>> Typically the error codes during parallel builds have been
>> ENOENT and EINVAL during the last few weeks. The failure
>> does not happen always at the same time, nor is the error
>> code always the same.
>>
>> Are there maybe known conditions like configuration
>> settings or something which could cause these odd failed
>> parallel builds on a ppc system?
> Is there anyone else trying to run local builds on
> 32-bit ppc? If so, have you noticed any problems with
> parallel make? Is there any other way to work around
> this problem but avoiding the parallel builds completely?
>
> BR,
> --jau
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