Nicolas Pitre <nico@cam.org> writes:

quoted text
> this is still rough, hence it is disabled by default.  You need to compile
> with "make THREADED_DELTA_SEARCH=1 ..." at the moment.
>
> Threading is done on different portions of the object list to be
> deltified. This is currently done by spliting the list into n parts and
> then a thread is spawned for each of them.  A better method would consist
> of spliting the list into more smaller parts and have the n threads
> pick the next part available.

In my experience, the worst performance hit happens when the real
memory is exhausted and things start paging.  Threading on different
portions of the object list is going to exacerbate the problem in the
areas where it hits worst.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum
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