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ad0e623332
With the new --valgrind-parallel=<n> option, we support running the tests in a single test script under valgrind in parallel using 'n' processes. This really follows the dumbest approach possible, as follows: * We spawn the test script 'n' times, using a throw-away TEST_OUTPUT_DIRECTORY. Each of the instances is given options that ensures that it only runs every n-th test under valgrind, but together they cover the entire range. * We add up the numbers from the individual tests, and provide the usual output. This is really a gross hack at this point, and should be improved. In particular we should keep the actual outputs somewhere more easily discoverable, and summarize them to the user. Nevertheless, this is already workable and gives a speedup of more than 2 on a dual-core (hyperthreaded) machine, using n=4. This is expected since the overhead of valgrind is so big (on the order of 20x under good conditions, and a large startup overhead at every git invocation) that redundantly running the non-valgrind tests in between is not that expensive. Helped-by: Jeff King <peff@peff.net> Signed-off-by: Thomas Rast <trast@inf.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git - the stupid content tracker
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"git" can mean anything, depending on your mood.
- random three-letter combination that is pronounceable, and not
actually used by any common UNIX command. The fact that it is a
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- stupid. contemptible and despicable. simple. Take your pick from the
dictionary of slang.
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works for you. Angels sing, and a light suddenly fills the room.
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See Documentation/gittutorial.txt to get started, then see
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If git has been correctly installed, then the tutorial can also be
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("man gitcvs-migration" or "git help cvs-migration" if git is
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