From owner-freebsd-hackers Sat Feb 20 13:51:42 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from herring.nlsystems.com (nlsys.demon.co.uk [158.152.125.33]) by hub.freebsd.org (Postfix) with ESMTP id D7B041194D for ; Sat, 20 Feb 1999 13:51:32 -0800 (PST) (envelope-from dfr@nlsystems.com) Received: from localhost (dfr@localhost) by herring.nlsystems.com (8.9.3/8.8.8) with ESMTP id VAA54157; Sat, 20 Feb 1999 21:50:51 GMT (envelope-from dfr@nlsystems.com) Date: Sat, 20 Feb 1999 21:50:51 +0000 (GMT) From: Doug Rabson To: Matthew Jacob Cc: freebsd-hackers@freebsd.org Subject: Re: Panic in FFS/4.0 as of yesterday - update In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 20 Feb 1999, Matthew Jacob wrote: > > As of the last set of fixes that added some more splbio protection, the > testing has gone a lot better. Many thanks. Now I'll start raising the bar > from 9GB filesystems to > 100GB filesystems with larger blocksizes (unless > someone says "No! No! Don't do that!") Its good that your panic seems to have been addressed but I can't see any quick solutions for the responsiveness problem. It appears to be a combination of the way that BSD looks up pathnames and the lack of any mechanism from stopping writer processes from monopolising the i/o queues. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message