From owner-cvs-all Mon Nov 29 22:46: 6 1999 Delivered-To: cvs-all@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.40.131]) by hub.freebsd.org (Postfix) with ESMTP id 04CEE157B8; Mon, 29 Nov 1999 22:45:55 -0800 (PST) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.9.3/8.9.2) with ESMTP id HAA25679; Tue, 30 Nov 1999 07:45:47 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Mike Smith Cc: peter.jeremy@alcatel.com.au, "Justin T. Gibbs" , Warner Losh , Matthew Dillon , Dan Moschuk , cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/i386/conf files.i386 src/sys/kern kern_fork.c src/sys/libkern arc4random.c src/sys/sys libkern.h In-reply-to: Your message of "Mon, 29 Nov 1999 16:05:30 PST." <199911300005.QAA02022@mass.cdrom.com> Date: Tue, 30 Nov 1999 07:45:47 +0100 Message-ID: <25677.943944347@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk In message <199911300005.QAA02022@mass.cdrom.com>, Mike Smith writes: >> If we just want the RAM back (and aren't concerned about the KVM), how >> about enabling paging for (safe parts) of the kernel[*]. (Most of) the >> initialisation code and associated tables are obvious immediate >> candidates. (As is the SYSCTL_* stuff). > >This sucks due to the fact that we page in 4k blocks and most of the >items that people are wringing their hands about are << 4K. It's even >worse in that we often use a 4M page to back the kernel. > >It sounds like a neat idea, but basically it's just not worth the effort. >There are better things to spend your time worrying about. 8) Well, I disagree. When we are talking about filessytems preloaded for md it might pay off to jettison them afterwards if we could use the RAM sensibly. -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message