From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 550F78D0001 for ; Fri, 12 Nov 2010 10:13:45 -0500 (EST) Date: Fri, 12 Nov 2010 09:13:40 -0600 (CST) From: Christoph Lameter Subject: Re: [PATCH/RFC] MM slub: add a sysfs entry to show the calculated number of fallback slabs In-Reply-To: <1289561309.1972.30.camel@castor.rsk> Message-ID: References: <1289561309.1972.30.camel@castor.rsk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Richard Kennedy Cc: Pekka Enberg , lkml , linux-mm List-ID: On Fri, 12 Nov 2010, Richard Kennedy wrote: > On my desktop workloads (kernel compile etc) I'm seeing surprisingly > little slab fragmentation. Do you have any suggestions for test cases > that will fragment the memory? Do a massive scan through huge amounts of files that triggers inode and dentry reclaim? > + * Note that this can give the wrong answer if the user has changed the > + * order of this slab via sysfs. Not good. Maybe have an additional counter in kmem_cache_node instead? -- 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