From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: [PATCH v6] add MAP_UNLOCKED mmap flag Date: Tue, 19 Jan 2010 15:18:11 +0200 Message-ID: <84144f021001190518x450868eax2edfa5e16ff6e4b@mail.gmail.com> References: <20100118141938.GI30698@redhat.com> <20100118181942.GD22111@redhat.com> <20100118191031.0088f49a@lxorguk.ukuu.org.uk> <20100119071734.GG14345@redhat.com> <84144f021001182337o274c8ed3q8ce60581094bc2b9@mail.gmail.com> <20100119075205.GI14345@redhat.com> <84144f021001190007q54a334dfwed64189e6cf0b7c4@mail.gmail.com> <20100119082638.GK14345@redhat.com> <84144f021001190044s397c6665qb00af48235d2d818@mail.gmail.com> <1263905332.2163.11.camel@barrios-desktop> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: <1263905332.2163.11.camel@barrios-desktop> Sender: owner-linux-mm@kvack.org To: Minchan Kim Cc: Gleb Natapov , Alan Cox , linux-mm@kvack.org, kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, akpm@linux-foundation.org, andrew.c.morrow@gmail.com, "Paul E. McKenney" , Rik van Riel , Johannes Weiner List-Id: linux-api@vger.kernel.org On Tue, Jan 19, 2010 at 2:48 PM, Minchan Kim wrote: > Gleb. How about using MADV_SEQUENTIAL on guest memory? > It makes that pages of guest are moved into inactive reclaim list more > fast. It means it is likely to swap out faster than other pages if it > isn't hit during inactive list. Yeah, something like that but we don't want the readahead. OTOH, it's not clear what Gleb's real problem is. Are the guest address spaces anonymous or file backed? Which parts of the emulator are swapped out that are causing the problem? Maybe it's a VM balancing issue that mlock papers over? Pekka -- 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