From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sd0208e0.au.ibm.com (d23rh904.au.ibm.com [202.81.18.202]) by ausmtp04.au.ibm.com (8.13.8/8.13.5) with ESMTP id k9VAlVOH149696 for ; Tue, 31 Oct 2006 21:47:31 +1100 Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.250.242]) by sd0208e0.au.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k9VAeV5c227430 for ; Tue, 31 Oct 2006 21:40:36 +1100 Received: from d23av01.au.ibm.com (loopback [127.0.0.1]) by d23av01.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k9VAb5I1002469 for ; Tue, 31 Oct 2006 21:37:05 +1100 Message-ID: <45472736.8030701@in.ibm.com> Date: Tue, 31 Oct 2006 16:06:38 +0530 From: Balbir Singh Reply-To: balbir@in.ibm.com MIME-Version: 1.0 Subject: Re: [ckrm-tech] RFC: Memory Controller References: <20061030103356.GA16833@in.ibm.com> <4545D51A.1060808@in.ibm.com> <4546212B.4010603@openvz.org> <454638D2.7050306@in.ibm.com> <45463F70.1010303@in.ibm.com> <45470FEE.6040605@openvz.org> <45471510.4070407@in.ibm.com> <20061031014243.1153655b.akpm@osdl.org> In-Reply-To: <20061031014243.1153655b.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Pavel Emelianov , vatsa@in.ibm.com, dev@openvz.org, sekharan@us.ibm.com, ckrm-tech@lists.sourceforge.net, haveblue@us.ibm.com, linux-kernel@vger.kernel.org, pj@sgi.com, matthltc@us.ibm.com, dipankar@in.ibm.com, rohitseth@google.com, menage@google.com, linux-mm@kvack.org, Vaidyanathan S List-ID: Andrew Morton wrote: > On Tue, 31 Oct 2006 14:49:12 +0530 > Balbir Singh wrote: > >> The idea behind limiting the page cache is this >> >> 1. Lets say one container fills up the page cache. >> 2. The other containers will not be able to allocate memory (even >> though they are within their limits) without the overhead of having >> to flush the page cache and freeing up occupied cache. The kernel >> will have to pageout() the dirty pages in the page cache. > > There's a vast difference between clean pagecache and dirty pagecache in this > context. It is terribly imprecise to use the term "pagecache". And it would be > a poor implementation which failed to distinguish between clean pagecache and > dirty pagecache. > Yes, I agree, it will be a good idea to distinguish between the two. -- Balbir Singh, Linux Technology Center, IBM Software Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org