From owner-freebsd-arch Fri Jul 7 8:34:45 2000 Delivered-To: freebsd-arch@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 7AFB837B687 for ; Fri, 7 Jul 2000 08:34:42 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id IAA00560; Fri, 7 Jul 2000 08:34:39 -0700 (PDT) (envelope-from dillon) Date: Fri, 7 Jul 2000 08:34:39 -0700 (PDT) From: Matthew Dillon Message-Id: <200007071534.IAA00560@apollo.backplane.com> To: Marius Bendiksen Cc: Alfred Perlstein , freebsd-arch@FreeBSD.ORG Subject: Re: Alterations to vops References: Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG : :> What may be happening here is stalling in namei(). find and cvsup :> are very heavy on path lookups and that combined with seek latency :> on the drive could result in filesystem locks on directories being :> held for much longer periods of time then normal. Any other process :> trying to 'open' a file (verses reading or writing an already-open file) :> would start to stall. : :Wouldn't this problem be alleviated by making the operations incremental, :rather than performing the whole thing in one go in kernelspace? : :Marius No. The operations in kernel space are already incremental... the kernel is being entered once per path lookup by find/cvsup. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message