Hi Andriy and Jeremy In my case, % sysctl vm.pmap.pg_ps_enabled vm.pmap.pg_ps_enabled: 1
thanks a lot! From: Jeremy Chadwick <free...@jdc.parodius.com> Subject: Re: Only 70% of theoretical peak performance on FreeBSD 8/amd64, Corei7 920 Date: Mon, 12 Apr 2010 08:00:23 -0700 > On Mon, Apr 12, 2010 at 05:41:35PM +0300, Andriy Gapon wrote: >> Perhaps, he talks about support of large pages (2M) and related improvements >> in >> TLB performance. If so, he (and you) may read about 'superpages' feature of >> FreeBSD. >> I am not sure if it is enabled by default in 8.0, you can check >> vm.pmap.pg_ps_enabled. > > On 8.0-RELEASE and later, they are. Line 183: > > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/amd64/amd64/pmap.c?annotate=1.667.2.12 > > Commit where they got enabled by default (approx. 16 months ago): > > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/amd64/amd64/pmap.c#rev1.646 > > -- > | Jeremy Chadwick j...@parodius.com | > | Parodius Networking http://www.parodius.com/ | > | UNIX Systems Administrator Mountain View, CA, USA | > | Making life hard for others since 1977. PGP: 4BD6C0CB | > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" > _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"