From owner-freebsd-hackers@FreeBSD.ORG Mon Aug 23 20:42:08 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 83D281065673 for ; Mon, 23 Aug 2010 20:42:08 +0000 (UTC) (envelope-from jhellenthal@gmail.com) Received: from mail-yx0-f182.google.com (mail-yx0-f182.google.com [209.85.213.182]) by mx1.freebsd.org (Postfix) with ESMTP id 207DA8FC17 for ; Mon, 23 Aug 2010 20:42:07 +0000 (UTC) Received: by yxe42 with SMTP id 42so2717615yxe.13 for ; Mon, 23 Aug 2010 13:42:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=jHbvOGVv5XG6OltEtbCGp0MzipA3KSYzOjAW7p8hngk=; b=UjTgf9uVkYYeyJN1LXC/EwdHff6K7RkJVa7OsGrqGpgFg6rpt0VIRGM2avsmjoMom8 o8HtYV6gEn05d9lWZb/jvg9Wdh3WI2OKn1b7x74qnQrhUYHajU2mtaTRfMCOdONc+tjd tJLEGsDaf8WapZ0nqXNFNCgLQEtnHC8ygPvLc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=n84hGOdbZ2ERFOfaBBYPDNwUnBvyFBccJenXvVsU4201jjKR/2UtVaut3NLm09ogQE W6sricUb6UxRIUs+VOjbWWJNkB6eTu9iYjtyagNHvfp/KY4l2wAAqHNNjo8CeTf9M+y8 R/B5rzQqKfEM+6dXWfLW4C4ssvUBbbSR72ObM= Received: by 10.213.17.203 with SMTP id t11mr4067082eba.66.1282596126483; Mon, 23 Aug 2010 13:42:06 -0700 (PDT) Received: from centel.dataix.local (adsl-99-190-84-182.dsl.klmzmi.sbcglobal.net [99.190.84.182]) by mx.google.com with ESMTPS id v8sm11442799eeh.8.2010.08.23.13.42.04 (version=SSLv3 cipher=RC4-MD5); Mon, 23 Aug 2010 13:42:05 -0700 (PDT) Sender: "J. Hellenthal" Message-ID: <4C72DD1A.9070204@DataIX.net> Date: Mon, 23 Aug 2010 16:42:02 -0400 From: jhell User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.9.2.8) Gecko/20100806 Lightning/1.0b1 Thunderbird MIME-Version: 1.0 To: Artem Belevich References: <4C719AB9.9020006@freebsd.org> <4C721161.40403@freebsd.org> In-Reply-To: X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org, zfs-devel@freebsd.org, Andriy Gapon Subject: Re: ZFS arc_reclaim_needed: better cooperation with pagedaemon X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Aug 2010 20:42:08 -0000 On 08/23/2010 03:28, Artem Belevich wrote: > Can anyone test the patch on a system with mix of UFS/ZFS filesystems > and see if the change mitigates or solves the issue with inactive > memory excessively backpressuring ARC. I have a system currently patched up to ZFSv15 and mm@'s metaslab patch running that I can test this on. Throw me a patch and some specific tests and I can have the results back to you in the next 2 days. Regards, -- jhell,v