From owner-freebsd-current Sun Jul 26 18:06:07 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA11035 for freebsd-current-outgoing; Sun, 26 Jul 1998 18:06:07 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from Kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA10993 for ; Sun, 26 Jul 1998 18:05:45 -0700 (PDT) (envelope-from karl@Mars.mcs.net) Received: from Mars.mcs.net (karl@Mars.mcs.net [192.160.127.85]) by Kitten.mcs.com (8.8.7/8.8.2) with ESMTP id UAA04177; Sun, 26 Jul 1998 20:05:12 -0500 (CDT) Received: (from karl@localhost) by Mars.mcs.net (8.8.7/8.8.2) id UAA16934; Sun, 26 Jul 1998 20:05:12 -0500 (CDT) Message-ID: <19980726200512.02119@mcs.net> Date: Sun, 26 Jul 1998 20:05:12 -0500 From: Karl Denninger To: Matthew Dillon Cc: current@FreeBSD.ORG Subject: Re: Diablo corruption on the filesystem References: <199807270103.SAA09631@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84 In-Reply-To: <199807270103.SAA09631@apollo.backplane.com>; from Matthew Dillon on Sun, Jul 26, 1998 at 06:03:13PM -0700 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Jul 26, 1998 at 06:03:13PM -0700, Matthew Dillon wrote: > :I turned off USE_PCOMMIT_SHM, USE_PCOMMIT_RW_MAP, USE_KP_RW_MAP and > :DO_COMMIT_POSTCACHE and recompiled diablo (but did NOT reinstall dnewslink, > :if that matters). > > I assume you mean DO_PCOMMIT_POSTCACHE here, not DO_COMMIT_POSTCACHE. Yes. > :Something significant happend when I changed the behavior of diablo > :internally. > : > :Does this shed any light on the issue? What have I actually done in terms > :of the calls made to the mmap routines by disabling these options? > > Hmmm. If DO_PCOMMIT_POSTCACHE is turned off the stress on the > history file will increase, but that's about it. It could also > have a slight serialization effect on multiple feeders that > are nearly-in-sync due to history file locking. > > *PCOMMIT_SHM & RW_MAP should not have any effect at all. Hmmm.... well, with those off and "q1" set I see no corruption. Remove the q1, and it *immediately* shows up again. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message