On 15/07/16 17:04, Konrad Rzeszutek Wilk wrote: > On Fri, Jul 15, 2016 at 10:53:51AM -0400, Boris Ostrovsky wrote: >> On 07/14/2016 09:29 AM, Andrew Cooper wrote: >>> However, I would recommend getting something functioning first, before >>> trying to optimise it. >> There are two fairly independent parts to improving scrubbing: one is >> making it asynchronous and second is improving clear_page() performance. >> Whole-RAM mapping is needed for the latter. > Attaching a nice graph of different memset on Broadwell (credits go to > Joao for doing the testing). Skylake is 10% faster than Broadwell.
Graph says memcpy() not memset(). Either way, it looks like we would do very well to "borrow" a different implementation. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
