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Fri Oct 13 21:02:06 CEST 2006 · https://mail.python.org/pipermail/python-dev/2006-October/069413.html

Larry Hastings <larry at hastings.org> wrote:
[snip]
> The machine is dual-core, and was quiescent at the time.  XP's scheduler 
> is hopefully good enough to just leave the process running on one core.

It's not.  Go into the task manager (accessable via Ctrl+Alt+Del by
default) and change the process' affinity to the second core.  In my
experience, running on the second core (in both 2k and XP) tends to
produce slightly faster results.  Linux tends to keep processes on a
single core for a few seconds at a time.

 - Josiah

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Speed up + for string concatenation, now as fast as "".join(x) idiom