imports and python locking

[Martin Pool]

On 21 Jul 2005, Neal Becker <ndbecker2 at gmail.com> wrote:
 
> What distro are you testing on?  Is this a modern glibc with nptl?

Ubuntu Hoary, libc6-2.3.2.ds1-20ubuntu13.

The attached c file demonstrates the problem when compiled with "gcc
-lpthread".  Compiling with -march=686 (in the hope of using cmpxchg or
something) does not help.  Run it under strace and observe thousands of
pointless futex calls.

-- 
Martin
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