On Thu, 6 Sep 2007, David Kastrup wrote: > Nicolas Pitre <nico@xxxxxxx> 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. Just don't use it if you don't have 1) a SMP machine and 2) enough ram. Threading will be enabled with a command line argument at some point. Nicolas - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
