From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <403D4D6F.6040304@cyberone.com.au> Date: Thu, 26 Feb 2004 12:35:43 +1100 From: Nick Piggin MIME-Version: 1.0 Subject: Re: More vm benchmarking References: <403C66D2.6010302@cyberone.com.au> <20040225014757.4c79f2af.akpm@osdl.org> <403C7181.6050103@cyberone.com.au> <20040225020425.2c409844.akpm@osdl.org> <20040225035043.6c536d99.akpm@osdl.org> <403D4303.1020709@cyberone.com.au> <20040225171445.148d99a1.akpm@osdl.org> In-Reply-To: <20040225171445.148d99a1.akpm@osdl.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-mm@kvack.org, Nikita@Namesys.COM List-ID: Andrew Morton wrote: >Nick Piggin wrote: > >>You would >>expect ZONE_NORMAL to have more pages reclaimed from it >>because there should be more pressure on it. >> > >Why? > >The only things which should be special about ZONE_NORMAL which I can think >of are: > >a) All the early-allocated pinned memory is sitting there and > >b) If you start an app which uses a lot of memory, its text pages will > probabyl be in ZONE_NORMAL while ZONE_DMA will contain just bss and > pagecache. > Maybe. If you're doing a heavy swapping kbuild, stuff will be pretty randomly placed. And ZONE_NORMAL will just get more pressure due to trying to allocate from there first. -- 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: aart@kvack.org