Date: Mon, 27 Jul 1998 10:04:46 -0500 From: Karl Denninger <karl@mcs.net> To: dmlb@ragnet.demon.co.uk Cc: current@FreeBSD.ORG, Pierre Beyssac <Pierre.Beyssac@hsc.fr> Subject: Re: MMAP problems Message-ID: <19980727100446.04271@mcs.net> In-Reply-To: <199807271501.IAA28873@mailgate.cadence.com>; from Duncan Barclay on Mon, Jul 27, 1998 at 04:00:55PM %2B0000 References: <19980725155148.43084@mcs.net>; <19980727152658.A24276@mars.hsc.fr> <199807271501.IAA28873@mailgate.cadence.com>
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On Mon, Jul 27, 1998 at 04:00:55PM +0000, Duncan Barclay wrote: > > On Sat, Jul 25, 1998 at 03:51:48PM -0500, Karl Denninger wrote: > > > I believe I have found a rather serious MMAP problem in -CURRENT. > > > > > > Diablo (the news system) is the test case; with MMAP enabled it will randomly > > > write exactly one block (512 bytes) of zeros into the article spool files > > > rather than the proper data - its almost like an update via MMAP isn't > > > > I have seen an extremely similar problem, both on 2.2.6 and > > -current, with INN 2.0 configured to use MMAP for the active file. > > It is fairly easy to reproduce by doing a "ctlinnd newgroup". After > > that, a bunch of zeroes appears in the active file. > > > > I haven't bothered investigating the problem for lack of time > > because configuring INN to use read() just works and because I > > wasn't sure it was a FreeBSD problem, but I'm ready to do any > > testing I can to help fix this. > > -- > > Ditto same problem with inn on -2.2.5, and inn 1.5.2. > I seem to remember that this was documented in the inn instructions? > > Duncan Sigh.... This one is pretty important folks; we need to get some attention focused on this since it appears to cut across all the various releases out there right now. -- -- 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
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