From owner-freebsd-hackers@FreeBSD.ORG Mon Aug 23 20:44:57 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 5B1021065674 for ; Mon, 23 Aug 2010 20:44:57 +0000 (UTC) (envelope-from jhellenthal@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id B47068FC0C for ; Mon, 23 Aug 2010 20:44:56 +0000 (UTC) Received: by wyj26 with SMTP id 26so8558864wyj.13 for ; Mon, 23 Aug 2010 13:44:55 -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=FT7hMW6eazNziYd4vKtoM2YRJ8pwKkGhB7GK/+FgnpM=; b=MosJ5LqcETAT7bwEzn9CKjqe7pMqS4F8crts5rLP/XLM771PkDJOLOK0i6WK38TYBT Ci6UKJLhmNAqsxbvamRb0FB9hS9L8tpcjBf3v1f7NQghqjNOCnW00eYFK70dj/7vIbDA 8JLEYV0OLHEQEExHBNyO9vxf1piGPJoCZcGqA= 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=wGQKRGsmYpqyS4i+Q5wf+3qDobxP/pIgYMiNbNTL9m+FuUuLDj+gRsfqnqbwQoGAC2 DzzK5yAAheh6K4SFhzPyICxuDm2xtCQtZUnQ0+vkTFOZROWkxatLETRFn/7F7C7cNUCG gxJ/D5m8RirG9MddumVVHFh3vRsWWDnIloq+Y= Received: by 10.227.127.193 with SMTP id h1mr5000926wbs.139.1282596294803; Mon, 23 Aug 2010 13:44:54 -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 i14sm3860128wbe.0.2010.08.23.13.44.53 (version=SSLv3 cipher=RC4-MD5); Mon, 23 Aug 2010 13:44:54 -0700 (PDT) Sender: "J. Hellenthal" Message-ID: <4C72DDC3.1000006@DataIX.net> Date: Mon, 23 Aug 2010 16:44:51 -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> <4C72DD1A.9070204@DataIX.net> In-Reply-To: <4C72DD1A.9070204@DataIX.net> 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 20:44:57 -0000 On 08/23/2010 16:42, jhell wrote: > 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. > Forget the patch 1 line change I can hand type that in. As for specific tests, let me know... -- jhell,v