On Wed, 08 Sep 2010 20:57:07 +0800 Miao Xie <miaox@xxxxxxxxxxxxxx> wrote: > On Wed, 8 Sep 2010 14:19:25 +0200 (cest), Andi Kleen wrote: > > > >> According to the data, the length of the most copies is>=128. > > > > Thanks for the data. Large is easier to optimize than small, that's > > good. > > > > Could you also measure how many memsets need the backwards copy? > > (should be easy to add) > > I think memset doesn't need the backwards copy. I meant for memmove of course. Obviously memset doesn't need a backwards copy. That was just the only thing the script didn't measure because the original version didn't have memmove support. Your whole thread was about making memmove faster, right? -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
