This patchset adds three programs that stress and measure different futex operations: (i) uaddr hashing, (ii) wakeups and (iii) requeuing/waiting.
More details and usage examples in each individual patch, along with parameter descriptions in the code. While the previous effort (https://lkml.org/lkml/2012/5/17/207) to add futex benchmarks to perf-bench failed, I strongly believe that perf is an ideal place for these kinds of programs. This patchset is different from Hitoshi's because it does not try to take over Darren's futextest suite, and only deals with finer grained aspects of the kernel's implementation, and thus mostly useful for kernel hacking. Furthermore, by being part of the kernel tree, it can get more attention and naturally evolve with time. Thanks! Davidlohr Bueso (3): perf-bench: add futex-hash microbenchmark perf-bench: add futex-wake microbenchmark perf-bench: add futex-requeue microbenchmark tools/perf/Makefile.perf | 3 + tools/perf/bench/bench.h | 3 + tools/perf/bench/futex-hash.c | 212 +++++++++++++++++++++++++++++++++++++++ tools/perf/bench/futex-requeue.c | 211 ++++++++++++++++++++++++++++++++++++++ tools/perf/bench/futex-wake.c | 201 +++++++++++++++++++++++++++++++++++++ tools/perf/bench/futex.h | 71 +++++++++++++ tools/perf/builtin-bench.c | 12 ++- tools/perf/perf.h | 6 ++ 8 files changed, 718 insertions(+), 1 deletion(-) create mode 100644 tools/perf/bench/futex-hash.c create mode 100644 tools/perf/bench/futex-requeue.c create mode 100644 tools/perf/bench/futex-wake.c create mode 100644 tools/perf/bench/futex.h -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
