From owner-freebsd-current Thu Feb 22 6:23:57 2001 Delivered-To: freebsd-current@freebsd.org Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by hub.freebsd.org (Postfix) with ESMTP id 4536C37B491; Thu, 22 Feb 2001 06:23:52 -0800 (PST) (envelope-from des@ofug.org) Received: (from des@localhost) by flood.ping.uio.no (8.9.3/8.9.3) id PAA44551; Thu, 22 Feb 2001 15:23:51 +0100 (CET) (envelope-from des@ofug.org) X-URL: http://www.ofug.org/~des/ X-Disclaimer: The views expressed in this message do not necessarily coincide with those of any organisation or company with which I am or have been affiliated. To: John Baldwin Cc: Maxim Sobolev , "Alexander N. Kabaev" , current@FreeBSD.org Subject: Re: A possible bug in the interrupt thread preemption code [Was: References: From: Dag-Erling Smorgrav Date: 22 Feb 2001 15:23:50 +0100 In-Reply-To: John Baldwin's message of "Thu, 22 Feb 2001 06:18:16 -0800 (PST)" Message-ID: Lines: 14 User-Agent: Gnus/5.0802 (Gnus v5.8.2) Emacs/20.4 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG John Baldwin writes: > On 22-Feb-01 Maxim Sobolev wrote: > > It's already have INVARIANTS, MUTEX_DEBUG, WITNESS and WITNESS_DDB. > Hmm, ouch, you do'nt want MUTEX_DEBUG, that'll slow your system to a crawl. For the same reason, you probably want WITNESS_SKIPSPIN. WITNESS_DDB is a bad idea, BTW, there's a (presumably harmless) lock order reversal in the FS code that you're practically guaranteed to to hit during boot. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message