From owner-freebsd-arch Tue Feb 5 20: 0:59 2002 Delivered-To: freebsd-arch@freebsd.org Received: from rover.village.org (rover.bsdimp.com [204.144.255.66]) by hub.freebsd.org (Postfix) with ESMTP id C91C737B426; Tue, 5 Feb 2002 20:00:54 -0800 (PST) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.11.3/8.11.3) with ESMTP id g1640ri12907; Tue, 5 Feb 2002 21:00:53 -0700 (MST) (envelope-from imp@village.org) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.11.6/8.11.6) with ESMTP id g1640kL34391; Tue, 5 Feb 2002 21:00:47 -0700 (MST) (envelope-from imp@village.org) Date: Tue, 05 Feb 2002 21:00:25 -0700 (MST) Message-Id: <20020205.210025.88474927.imp@village.org> To: tlambert2@mindspring.com Cc: cjclark@alum.mit.edu, cristjc@earthlink.net, mike@FreeBSD.ORG, freebsd-arch@FreeBSD.ORG Subject: Re: Setting sysctl(8)'s in rc.conf From: "M. Warner Losh" In-Reply-To: <3C609B28.4B040672@mindspring.com> References: <20020205121345.B368@gohan.cjclark.org> <20020205.135658.102576700.imp@village.org> <3C609B28.4B040672@mindspring.com> X-Mailer: Mew version 2.1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message: <3C609B28.4B040672@mindspring.com> Terry Lambert writes: : Will this let them be set before load? Yes. : There's a bad assumption in tunables, that they may be : tuned after boot time, which is not true for things : like sizes of zalloci() zones, which must be contiguous, : and whose size prevents reallocation, and whose use : before reallocation would lead to fragmentation. No. Tunables can't be set after boot time. They are hints in the kenrel env that people get to with the TUNABLE* macros. Maybe you are thinking of sysctls? Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message