From owner-svn-src-all@FreeBSD.ORG Thu Aug 28 22:30:28 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 6404094B; Thu, 28 Aug 2014 22:30:28 +0000 (UTC) Received: from pp1.rice.edu (proofpoint1.mail.rice.edu [128.42.201.100]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 25E5D1AA2; Thu, 28 Aug 2014 22:30:27 +0000 (UTC) Received: from pps.filterd (pp1.rice.edu [127.0.0.1]) by pp1.rice.edu (8.14.5/8.14.5) with SMTP id s7SMR4Yc022435; Thu, 28 Aug 2014 17:30:18 -0500 Received: from mh11.mail.rice.edu (mh11.mail.rice.edu [128.42.199.30]) by pp1.rice.edu with ESMTP id 1p121bsbhc-1; Thu, 28 Aug 2014 17:30:18 -0500 X-Virus-Scanned: by amavis-2.7.0 at mh11.mail.rice.edu, auth channel Received: from 108-254-203-201.lightspeed.hstntx.sbcglobal.net (108-254-203-201.lightspeed.hstntx.sbcglobal.net [108.254.203.201]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) (Authenticated sender: alc) by mh11.mail.rice.edu (Postfix) with ESMTPSA id A52B84C0096; Thu, 28 Aug 2014 17:30:17 -0500 (CDT) Message-ID: <53FFAD79.7070106@rice.edu> Date: Thu, 28 Aug 2014 17:30:17 -0500 From: Alan Cox User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: "Matthew D. Fuller" , Steven Hartland Subject: Re: svn commit: r270759 - in head/sys: cddl/compat/opensolaris/kern cddl/compat/opensolaris/sys cddl/contrib/opensolaris/uts/common/fs/zfs vm References: <201408281950.s7SJo90I047213@svn.freebsd.org> <899BF203A6C64F3D8C8902F371D9DA79@multiplay.co.uk> <20140828211508.GK46031@over-yonder.net> In-Reply-To: <20140828211508.GK46031@over-yonder.net> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 kscore.is_bulkscore=5.65364421944992e-12 kscore.compositescore=2.08269938622996e-06 circleOfTrustscore=0 compositescore=0.601496849000349 urlsuspect_oldscore=0.00149684900034924 suspectscore=3 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=0 rbsscore=0.601496849000349 spamscore=0 recipient_to_sender_domain_totalscore=0 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1408280258 Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Dmitry Morozovsky X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Aug 2014 22:30:28 -0000 On 08/28/2014 16:15, Matthew D. Fuller wrote: > On Thu, Aug 28, 2014 at 10:11:39PM +0100 I heard the voice of > Steven Hartland, and lo! it spake thus: >> Its very likely applicable to stable/9 although I've never used 9 >> myself, we jumped from 9 direct to 10. > This is actually hitting two different issues from the two bugs: > > - 191510 is about "ARC isn't greedy enough" on huge-memory machines, > and from the osreldate that bug was filed on 9.2, so presumably is > applicable. > > - 187594 is about "ARC is too greedy" (probably mostly on not-so-huge > machines) and starves/drives the rest of the system into swap. That > I believe came about as a result of some unrelated change in the > 10.x stream that upset the previous balance between ARC and the rest > of the VM, so isn't a problem on 9.x. 10.0 had a bug in the page daemon that was fixed in 10-STABLE about three months ago (r265945). The ARC was not the only thing affected by this bug.