Re: [patch v2] epoll use a single inode ...

From: Linus Torvalds
Date: Tue Mar 06 2007 - 12:20:23 EST




On Tue, 6 Mar 2007, Eric Dumazet wrote:
>
> Something like :
>
> [PATCH] : Use reciprocal divides in sprintf()

Try this on Core 2, and I suspect that you'll find that the hardware is
actually *faster* than doing the shift/test, function call and the
two multiplies.

> Using reciprocal divides permits to change each divide by two multiplies, less
> expensive on current CPUS.

Are you sure?

Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/