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
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| Jeremy Chadwick jdc@parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
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