On Fri, Apr 13, 2012 at 10:53 AM, Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> wrote: >> >> Do you have numbers? > > In a benchmark that does mmaped-read, there is a 28% speed up > after getting rid of the counters. Ok, that's big. But is it any actual real workload on a real filesystem? It looks like this should only happen for actual IO, so I get the feeling that this is some made-up benchmark for a filesystem on a RAM-disk? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html