Re: [PATCH] basic threaded delta search

> Nicolas Pitre <nico@cam.org> writes:
> 
> > 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.