From owner-freebsd-current Thu Mar 18 7:19:46 1999 Delivered-To: freebsd-current@freebsd.org Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193]) by hub.freebsd.org (Postfix) with ESMTP id 93A5514CA3 for ; Thu, 18 Mar 1999 07:19:41 -0800 (PST) (envelope-from wollman@khavrinen.lcs.mit.edu) Received: (from wollman@localhost) by khavrinen.lcs.mit.edu (8.9.1/8.9.1) id KAA12752; Thu, 18 Mar 1999 10:19:12 -0500 (EST) (envelope-from wollman) Date: Thu, 18 Mar 1999 10:19:12 -0500 (EST) From: Garrett Wollman Message-Id: <199903181519.KAA12752@khavrinen.lcs.mit.edu> To: Peter Wemm Cc: Matthew Dillon , Pierre Beyssac , freebsd-current@FreeBSD.ORG Subject: Re: panic: vfs_busy: unexpected lock failure In-Reply-To: <199903181449.WAA33699@spinner.netplex.com.au> References: <199903180111.RAA34092@apollo.backplane.com> <199903181449.WAA33699@spinner.netplex.com.au> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG < said: > AMD is easy to upset, and that's bad because it's holding a mountpoint in / > (ie: /host) which often gets hit by every single getcwd() call when it > gets a lstat("/host"...) or whatever. I think this is the single largest > source of load on the amd process. > IMHO, /host needs to move down a level to get it out of the way of > getcwd(). NFS mounts should probably move away from / as well, as they > cause traffic on each getcwd(). `/host' is non-standard. The Standard Configuration is `/net' is the directory simulated by amd and `/a/${hostname}/root' is where amd mounts the directory tree. This is done specifically to avoid getcwd wedgitude. The example we ship would sorely puzzle anyone who is experienced running a Standard Configuration amd. My machine has, throughout its entire history, had `/home' simulated by amd. I have literally *never* had amd hose my configuration (and I would know it fast since both mail and Web service would break). -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message