From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 11 Jan 2008 13:36:03 +0900 From: KOSAKI Motohiro Subject: Re: [patch 10/19] No Reclaim LRU Infrastructure In-Reply-To: <20080108210008.383114457@redhat.com> References: <20080108205939.323955454@redhat.com> <20080108210008.383114457@redhat.com> Message-Id: <20080111133048.FD5C.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: Rik van Riel Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Lee Schermerhorn List-ID: Hi Rik > +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 :) - 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