On Sun, May 20, 2012 at 2:01 AM, Marko Zec <z...@fer.hr> wrote: > Hi all, > > I'm playing with an algorithm which makes use of large contiguous blocks of > kernel memory (ranging from 1M to 1G in size), so it would be nice if those > could be somehow forcibly mapped to superpages. I was hoping that the VM > system would automagically map (merge) contiguous 4k pages to superpages, > but > apparently it doesn't: > > vm.pmap.pdpe.demotions: 2 > vm.pmap.pde.promotions: 543 > vm.pmap.pde.p_failures: 266253 > vm.pmap.pde.mappings: 0 > vm.pmap.pde.demotions: 31 > > No, your conclusion is incorrect. These counts show that 543 superpage mappings were created by promotion.
Alan _______________________________________________ freebsd-amd64@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-amd64 To unsubscribe, send any mail to "freebsd-amd64-unsubscr...@freebsd.org"
