On Mon, Jan 23, 2017 at 01:47:20PM +0900, Minchan Kim wrote: > Hello, > > When I look at first patch, I wanted to use increment loop but didn't > tell to you because that small piece of code is no harmful for readbility > to me so I want to keep author's code rather than pointing the trivial > which is just matter of preference out. > > Rather than readiblity, I suspect it might hurt performance and talked > with Namhyung but we cannot find anything decremental loop is bad > compared to incremental. Rather than, many articles have been said > decrement loop is faster like zhouxianrong's mentiond although I don't > think it makes marginal difference. > > Joonsoo, why do you think incremental is faster? > zhouxianrong, why do you think decrement loops makes cache problem? > > I'm okay either way. Just want to know why you guys think about it.
Hmm... I guess that cache prefetcher works better for forward access but I'm not sure. Thanks.
