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Date:      Sat, 14 Mar 2009 01:24:57 +0000
From:      Bruce Simpson <bms@incunabulum.net>
To:        Bruce M Simpson <bms@FreeBSD.org>
Cc:        svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-7@freebsd.org
Subject:   Re: svn commit: r189781 - stable/7/sys/kern
Message-ID:  <49BB0769.6030200@incunabulum.net>
In-Reply-To: <200903140112.n2E1CZmM077949@svn.freebsd.org>
References:  <200903140112.n2E1CZmM077949@svn.freebsd.org>

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Bruce M Simpson wrote:
>   Early MFC, as the test case in the PR is fairly complete and the
>   submitter also re-ran test case on -STABLE. It also bites Python
>   fairly hard, which will otherwise try to use POSIX sems for its
>   internal thread synchronization; this needs more in-depth testing.
>  

Note: FreeBSD's build of Python does NOT attempt to use POSIX sems by 
default, it
will only do this if explicitly patched to do so. It defaults to using 
condvars + mutexes
to build Python's internal thread locks.

I'd encourage folk to try the patch which does this,
I only posted the 'side-step' patch (i.e. use GNU Pth, needs to be 
explicitly
enabled in OPTIONS) but the changes needed are in here too:
    http://people.freebsd.org/~bms/dump/python26-fbsd-pth.patch

cheers
BMS



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