From owner-freebsd-smp Mon Oct 9 19: 7:46 2000 Delivered-To: freebsd-smp@freebsd.org Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by hub.freebsd.org (Postfix) with ESMTP id 16D4037B503; Mon, 9 Oct 2000 19:07:41 -0700 (PDT) Received: (from grog@localhost) by wantadilla.lemis.com (8.11.0/8.9.3) id e9A27b787771; Tue, 10 Oct 2000 11:37:37 +0930 (CST) (envelope-from grog) Date: Tue, 10 Oct 2000 11:37:37 +0930 From: Greg Lehey To: John Baldwin Cc: Chuck Paterson , smp@FreeBSD.ORG, Bob Bishop Subject: Re: Options with SMPng Message-ID: <20001010113737.B87663@wantadilla.lemis.com> References: <200010091340.HAA06839@berserker.bsdi.com> <200010091639.JAA03990@john.baldwin.cx> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <200010091639.JAA03990@john.baldwin.cx>; from jhb@FreeBSD.ORG on Mon, Oct 09, 2000 at 09:39:43AM -0700 Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Monday, 9 October 2000 at 9:39:43 -0700, John Baldwin wrote: > > On 09-Oct-00 Chuck Paterson wrote: >> I think we ought to dump the KTR_EXTEND stuff. This makes >> the kernel run soo slow that it isn't really usable. Without >> KTR_EXTEND the penalty is minor. > > Hmm, well, combined with my ktr-verbose hack, KTR_EXTEND's ability > to print out a useful string directly has proved useful for tracking > down bugs with interrupts disabled, or when, for example, PCI interrupts > are firing too fast for any work to be done because the source wasn't > being quieted on the alpha. Agreed. Nobody's pretending that the KTR_EXTEND is useful in a general-purpose kernel, but it makes a lot of difference when developing. I don't see any good reason to dump it. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message