Messages in this thread | | | Date | Tue, 6 Mar 2007 19:47:25 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [patch v2] epoll use a single inode ... |
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On Tue, 6 Mar 2007, Eric Dumazet wrote: > > I did a user space program, attached to this mail. > > I rewrote the reciprocal_div() for i386 so that one multiply is used.
Ok, this is definitely faster on Core 2 as well, so "numbers talk, bullshit walks". No more objections.
(That said, I bet you could do even better for octal and hex numbers, so if you *really* want to speed things up, you should just make a special-case routine for each base (there's just three of them), and you can then also optimize the base-10 thing much better (you can do two digits at a time by dividing by 100, etc)
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