Hi Dave, On 27.09.2015 18:27, John David Anglin wrote: > On 2015-09-22, at 12:20 PM, Helge Deller wrote: >> The baseline for all results is the timing with a vanilla kernel 4.2: >> real 0m13.596s >> user 0m18.152s >> sys 0m35.752s >> >> >> The next results are with the atomic_hash (a) patch applied: >> For ATOMIC_HASH_SIZE = 4. >> real 0m21.892s >> user 0m27.492s >> sys 0m59.704s >> >> For ATOMIC_HASH_SIZE = 64. >> real 0m20.604s >> user 0m24.832s >> sys 0m56.552s >> > Attached is a revised patch "a" to try to improve performance of atomic_t variables. If you get a chance, could > you see how it performs. here are the numbers for your revised "a" patch (on top of vanilla kernel 4.2): real 0m20.040s user 0m22.876s sys 0m56.724s (Variations can be around +- 0.5 seconds) If you want to test yourself: The testcase executable is on sibaris: /home/var_lib_sbuild_build/libatomic/libatomic-ops-7.4.2/test_atomic Helge -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
