2015-04-08 20:19 GMT+08:00 Richard Weinberger <[email protected]>: > On Wed, Apr 8, 2015 at 3:00 AM, Pengfei Yuan <[email protected]> wrote: >> Could you please provide some examples that I can investigate? >> Thanks! > > It would be awesome if you could find out which gcc optimizations > cause the speed up. > "gcc -c -Q -O3 --help=optimizers" will help you. >
This is really helpful. But I can only find very short description for each option from https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html > Please also double check your results. > You need do to multiple runs, etc... > Especially the redis speed up looks odd. Does redis really spend that much > time > in the kernel? Redis is special among the six applications because it is single-threaded. Yuan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
