From owner-freebsd-current Tue Apr 10 19: 1:14 2001 Delivered-To: freebsd-current@freebsd.org Received: from mail.viasoft.com.cn (unknown [61.153.1.177]) by hub.freebsd.org (Postfix) with ESMTP id EE58A37B422 for ; Tue, 10 Apr 2001 19:01:10 -0700 (PDT) (envelope-from bsddiy@21cn.com) Received: from William ([192.168.1.98]) by mail.viasoft.com.cn (8.9.3/8.9.3) with ESMTP id JAA17211; Wed, 11 Apr 2001 09:56:44 +0800 Date: Wed, 11 Apr 2001 10:03:04 +0800 From: David Xu X-Mailer: The Bat! (v1.48f) Personal Organization: Viasoft X-Priority: 3 (Normal) Message-ID: <424036143.20010411100304@21cn.com> To: Matt Dillon Cc: Brian Somers , Jason DiCioccio , "'current@freebsd.org'" Subject: Re[2]: FW: Filesystem gets a huge performance boost In-reply-To: <200104101824.f3AIOZ389340@earth.backplane.com> References: <200104101103.f3AB36P49523@hak.lan.Awfulhak.org> <200104101824.f3AIOZ389340@earth.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello Matt, Wednesday, April 11, 2001, 2:24:35 AM, you wrote: :>> I'm not 100% convinced about the algorithm to avoid clusters filling :>> up with directory-only entries (it looks like a worst-case would fill :>> a cluster with 50% directories and 50% files leaving a bad layout when :>> the directories are populated further), but then the non-dirpref :>> scheme has some far worse worst-case scenarios ;-) MD> : MD> :Just to follow up on myself... it seems the dirpref stuff was MD> :committed to FreeBSD this morning :-] MD> : MD> :-- MD> :Brian MD> Yup, Kirk committed it. I really like the changes -- in the old days MD> disk caches were tiny and directories were not well cached on top of that. MD> It made sense to try to keep directories close to their files. Any plan to MFC? I am interesting to see it in 4.3-RELEASE. -- David Xu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message