On Sun, Jun 28, 2009 at 7:14 PM, Nathanael Hoyle <nho...@hoyletech.com>wrote:
> Wojciech Puchar wrote: > >> i enabled >> vm.pmap.pg_ps_enabled: 1 >> >> >> could you please explain what exactly this values means? >> because i don't understand why promotions-demotions!=mappings >> >> vm.pmap.pde.promotions: 2703 >> vm.pmap.pde.p_failures: 6290 >> vm.pmap.pde.mappings: 610 >> vm.pmap.pde.demotions: 289 >> >> >> >> >> other question - tried enabling it on my i386 laptop (256 megs ram), >> always mappings==0, while promitions>demotions>0. >> >> certainly there are apps that could be put on big pages, gimp editing 40MB >> bitmap for example >> > > Just to be clear, since you say i386 (I presume you mean architecture), I > believe the Physical Address Extensions which allowed 2MB Page Size bit to > be set was introduced with Pentium Pro. Processors prior to this were > limited to standard 4KB pages. > No. Many of those processors supported 4MB pages. Regards, Alan _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
