From owner-freebsd-hackers Wed Mar 25 23:45:14 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA00259 for freebsd-hackers-outgoing; Wed, 25 Mar 1998 23:45:14 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA00247 for ; Wed, 25 Mar 1998 23:45:07 -0800 (PST) (envelope-from toor@dyson.iquest.net) Received: (from root@localhost) by dyson.iquest.net (8.8.8/8.8.8) id CAA01023; Thu, 26 Mar 1998 02:44:46 -0500 (EST) (envelope-from toor) Message-Id: <199803260744.CAA01023@dyson.iquest.net> Subject: Re: 4 MB pagesize In-Reply-To: <199803260641.BAA14128@dwarpal.in.oracle.com> from "HARAWAT.IN.ORACLE.COM" at "Mar 26, 98 10:26:34 am" To: HARAWAT.IN.oracle.com.ofcmail@in.oracle.com (HARAWAT.IN.ORACLE.COM) Date: Thu, 26 Mar 1998 02:44:46 -0500 (EST) Cc: freebsd-hackers@FreeBSD.ORG From: "John S. Dyson" Reply-To: dyson@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG HARAWAT.IN.ORACLE.COM said: > > Is anyone planning to impleement 4 MB pages in FreeBSD like solaris > 2.6 does . > FreeBSD does in -current (and has for quite a while.) However, those pages are used for the kernel and device buffers (like video mem.) I do know that certain applications can gain from pre-allocated memory regions that are mapped by 4MB pages. If you have any info on the actual performance gains, it would be useful. I would certainly be willing to implement it, if it ends up giving any reasonable improvement. -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message