On 7 September 2017 at 07:06, Rebecca Cran <rebecca@xxxxxxxxxxxx> wrote: > >> On Sep 7, 2017, at 12:00 AM, Sitsofe Wheeler <sitsofe@xxxxxxxxx> wrote: >> >> When this gets added will it be possible for fio to have a "memcpy >> benchmark" mode where you're able to compare implementations when >> using a fixed block size (in a similar way to --crctest) or does this >> not make sense because you actually have to be copying to a device to >> see the difference? > > That does make sense: to see the difference you just need to copy data between areas of memory. I can't help but be reminded of Linus comment over on https://bugzilla.redhat.com/show_bug.cgi?id=638477#c46 . At any rate I notice that Agner Fog has an optimised memcpy too over on http://agner.org/optimize/#asmlib (and older version apperars to be here https://github.com/lukego/asmlib/blob/master/memcpy64.asm ). -- Sitsofe | http://sucs.org/~sits/ -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
