From owner-freebsd-current Tue Feb 5 21:19:16 2002 Delivered-To: freebsd-current@freebsd.org Received: from rover.village.org (rover.bsdimp.com [204.144.255.66]) by hub.freebsd.org (Postfix) with ESMTP id 0A85437B420 for ; Tue, 5 Feb 2002 21:18:29 -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 g165IRi13528; Tue, 5 Feb 2002 22:18:28 -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 g165IQL34985; Tue, 5 Feb 2002 22:18:27 -0700 (MST) (envelope-from imp@village.org) Date: Tue, 05 Feb 2002 22:18:05 -0700 (MST) Message-Id: <20020205.221805.35979979.imp@village.org> To: drosih@rpi.edu Cc: current@FreeBSD.ORG Subject: Re: Performance of -current vs -stable From: "M. Warner Losh" In-Reply-To: References: 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-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message: Garance A Drosihn writes: : Could it be due to the DDB, INVARIANTS & WITNESS options in the : kernel? If it is that's fine with me, I'm just wondering where : that magnitude of a slowdown would be coming from. No way for DDB, Maybe for Invariants, almost certainly for witness. WITNESS is slow and tends to exagerate lock contention stalls (or so it seems). Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message