From owner-freebsd-fs@FreeBSD.ORG Sun Sep 12 17:02:42 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2C186106566C; Sun, 12 Sep 2010 17:02:42 +0000 (UTC) (envelope-from prvs=18715e5890=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id 8F6098FC15; Sun, 12 Sep 2010 17:02:41 +0000 (UTC) X-MDAV-Processed: mail1.multiplay.co.uk, Sun, 12 Sep 2010 17:51:55 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Sun, 12 Sep 2010 17:51:55 +0100 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 by mail1.multiplay.co.uk (MDaemon PRO v10.0.4) with ESMTP id md50011222930.msg; Sun, 12 Sep 2010 17:51:54 +0100 X-Authenticated-Sender: Killing@multiplay.co.uk X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=18715e5890=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk Message-ID: From: "Steven Hartland" To: "Andriy Gapon" , "Kostik Belousov" References: <5DB6E7C798E44D33A05673F4B773405E@multiplay.co.uk><4C85E91E.1010602@icyb.net.ua> <4C873914.40404@freebsd.org><20100908084855.GF2465@deviant.kiev.zoral.com.ua> <4C874F00.3050605@freebsd.org> Date: Sun, 12 Sep 2010 17:51:52 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="UTF-8"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 Cc: freebsd-fs@freebsd.org, Pawel Jakub Dawidek Subject: Re: zfs very poor performance compared to ufs due to lack of cache? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Sep 2010 17:02:42 -0000 ----- Original Message ----- From: "Andriy Gapon" >>> --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c >>> +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c >>> @@ -500,6 +500,7 @@ again: >>> sched_unpin(); >>> } >>> VM_OBJECT_LOCK(obj); >>> + vm_page_set_validclean(m, off, bytes); >> Only if error == 0, perhaps ? Ok tried this and still no joy, the value of the cache always falls to that of the min value and all memory used by sendfile still seems to get lost into inactive memory :( Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.