From owner-freebsd-stable Sat Jun 12 21:57:22 1999 Delivered-To: freebsd-stable@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id AAFB614F8E; Sat, 12 Jun 1999 21:57:19 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id VAA65569; Sat, 12 Jun 1999 21:55:45 -0700 (PDT) (envelope-from dillon) Date: Sat, 12 Jun 1999 21:55:45 -0700 (PDT) From: Matthew Dillon Message-Id: <199906130455.VAA65569@apollo.backplane.com> To: The Hermit Hacker Cc: freebsd-current@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: MMAP() in STABLE/CURRENT ... References: Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :Over the past week and a bit, the INN -CURRENT source tree had a major :upheaval of code, in order to fix the major problem where reader speed :sucked. What used to take >1min to load up a newsgruop now generally :takes mere seconds (no exaggeration, try it)... : :The problem is that the new code makes *heavy* use of MMAP() ... : :When the code was put in place, I immediately upgraded my server to give :the code a good test (am one of the developers over there) in a production :environment, and ever since then, my system locks up around 24hrs uptime, :requiring a cold boot. : :I cannot get into DDB, since I'm over a serial console, so debugging this :has proved to be next to impossible :( I'll bet that it is another mmap/write deadlock. :I run CURRENT at home and STABLE in production, but the production server :is the only one that I believe has enough load on her to be able to :trigger it... : :Is this a problem that is fixed in CURRENT, but hasn't migrated down into :STABLE? Is there any way of adding some sort of debug code to STABLE such :that if the race condition is trigger, it will at least pop up a message :onto the console letting me know its happened so that I know its MMAP() :related? : :Thanks... :Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy If it is what I think it is, it is *NOT* yet fixed in -current. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message