Eduardo Kienetz writes:
hmm, this made me think about courier-imap... and my graduation project... Sam, do you think some courier-imap operations could be parallelised (via MPI on a cluster) to improve performance?
There's nothing much to parallelize. The only operations worth parallelizing are SEARCH and SORT. However, nobody really uses SORT, except some very simple clients. Most IMAP clients cache all message metadata, and do sorting themselves. And I don't know how much you can buy in savings from doing any kind of parallelization of SEARCH. It's doubtfull whether the overhead and complexity of setting up a parallelization framework will buy you much. The overhead still consists of reading message files, which is an I/O bound process where parallelization isn't going to help much.
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