[mercury-users] Threaded processing slower than sequential?

[Peter Ross]

In my experience with the parallel mode, I believe that the garbage
collection is the culprit.  Especially if you are doing lots of
little data allocations.  Running a threaded application but with
only one thread active under windows I had a 10x slow-down.

My suspicion is that it was due to GC, as the generated code should've
been the same.

Pete
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