From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id 68A598D0001 for ; Fri, 26 Nov 2010 10:48:18 -0500 (EST) Date: Fri, 26 Nov 2010 09:48:14 -0600 (CST) From: Christoph Lameter Subject: Re: Free memory never fully used, swapping In-Reply-To: <20101125101803.F450.A69D9226@jp.fujitsu.com> Message-ID: References: <20101124092753.GS19571@csn.ul.ie> <20101124191749.GA29511@hostway.ca> <20101125101803.F450.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro Cc: Simon Kirby , Mel Gorman , Andrew Morton , linux-kernel , linux-mm@kvack.org List-ID: On Thu, 25 Nov 2010, KOSAKI Motohiro wrote: > Please try SLAB instead SLUB (it can be switched by kernel build option). > SLUB try to use high order allocation implicitly. SLAB uses orders 0-1. Order is fixed per slab cache and determined based on object size at slab creation. SLUB uses orders 0-3. Falls back to smallest order if alloc order cannot be met by the page allocator. One can reduce SLUB to SLAB orders by specifying the following kernel commandline parameter: slub_max_order=1 -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org