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Date:      Sun, 5 Feb 2012 02:44:09 -0800
From:      Garrett Cooper <yanegomi@gmail.com>
To:        Jan Mikkelsen <janm-freebsd-hackers@transactionware.com>
Cc:        freebsd-hackers@freebsd.org, Xin LI <delphij@delphij.net>, Ivan Voras <ivoras@freebsd.org>, davidxu@freebsd.org
Subject:   Re: sem(4) lockup in python?
Message-ID:  <CAGH67wT3HuxPHUXeTib0qJNH%2BO5snn3Eiim1bfj8LewYoKdXdA@mail.gmail.com>
In-Reply-To: <5D37298B-9D68-4F0F-8AAB-E8F2DBB9D9C3@transactionware.com>
References:  <jejrbe$or8$1@dough.gmane.org> <201201110806.30620.jhb@freebsd.org> <CAF-QHFWFvYTPeM68Mk%2BOYVX--MNhKOJ2o1GF9ZOsBmtiC5fYFQ@mail.gmail.com> <CAGH67wRsek2-WY_ETW6QEER1r5dDXLXfDjbzpHMjtv059Y8cJw@mail.gmail.com> <5D37298B-9D68-4F0F-8AAB-E8F2DBB9D9C3@transactionware.com>

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On Sun, Feb 5, 2012 at 2:41 AM, Jan Mikkelsen
<janm-freebsd-hackers@transactionware.com> wrote:
>
> On 12/01/2012, at 3:47 AM, Garrett Cooper wrote:
>
>> [ builds hanging in python with waf =85 ]
>
>> Glad to see that iXsystems isn't the only one ([1] -- please add a "me
>> too" to the PR). The problem is that we do FreeNAS nightlies and they
>> frequently get stuck building tdb (10%~20% of the time) and it sticks
>> when doing interactive builds as well. The issue appears to be
>> exacerbated when we have more builds running in parallel on the same
>> machine. I've also run into the same issue compiling talloc because it
>> uses the same waf infrastructure as tdb, which was designed to "speed
>> things up by forcing builds to be parallelized" (It builds
>> kern.smp.ncpus jobs instead of -j 1). Furthermore, it seems to occur
>> regardless of whether or not we have the WITH_SEM enabled in python or
>> not (build.ix's copy of python doesn't have it enabled, but
>> streetfighter.ix, my system bayonetta, etc do).
>
> Any progress on this? Or a workaround?
>
> Just had another build stuck on this =85

    'make MAKE_JOBS_NUMBER=3D1' is the workground used right now..
Thanks,
-Garrett



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