From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 15 Jan 2008 09:06:20 +0900 From: KOSAKI Motohiro Subject: Re: [patch 10/19] No Reclaim LRU Infrastructure In-Reply-To: <1200066224.5304.6.camel@localhost> References: <20080111133048.FD5C.KOSAKI.MOTOHIRO@jp.fujitsu.com> <1200066224.5304.6.camel@localhost> Message-Id: <20080115085931.116D.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Lee Schermerhorn Cc: kosaki.motohiro@jp.fujitsu.com, Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Hi Lee-san > > > +config NORECLAIM > > > + bool "Track non-reclaimable pages (EXPERIMENTAL; 64BIT only)" > > > + depends on EXPERIMENTAL && 64BIT > > > + help > > > + Supports tracking of non-reclaimable pages off the [in]active lists > > > + to avoid excessive reclaim overhead on large memory systems. Pages > > > + may be non-reclaimable because: they are locked into memory, they > > > + are anonymous pages for which no swap space exists, or they are anon > > > + pages that are expensive to unmap [long anon_vma "related vma" list.] > > > > Why do you select to default is NO ? > > I think this is really improvement and no one of 64bit user > > hope turn off without NORECLAIM developer :) > > This was my doing. I left the default == NO during > development/experimemental stage so that one would have to take explicit > action to enable this function. If the feature makes it into mainline > and we decide that the default should be 'yes', that will be an easy > change. Oh I see. I will help testing too for it merges to mainline early. thanks. - kosaki -- 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