Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932571Ab2JWSPl (ORCPT ); Tue, 23 Oct 2012 14:15:41 -0400 Received: from a193-30.smtp-out.amazonses.com ([199.255.193.30]:26351 "EHLO a193-30.smtp-out.amazonses.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756746Ab2JWSPk (ORCPT ); Tue, 23 Oct 2012 14:15:40 -0400 Date: Tue, 23 Oct 2012 18:15:38 +0000 From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Ezequiel Garcia cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Tim Bird , Pekka Enberg , Matt Mackall Subject: Re: [PATCH 1/2] mm/slob: Mark zone page state to get slab usage at /proc/meminfo In-Reply-To: Message-ID: <0000013a8ed646c2-4cc34bd5-19c3-4e99-9fa0-248cdbc24feb-000000@email.amazonses.com> References: <1350907434-2202-1-git-send-email-elezegarcia@gmail.com> <0000013a88ebfa65-af0fc24b-13fd-400f-b7fc-32230ca70620-000000@email.amazonses.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-SES-Outgoing: 199.255.193.30 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 907 Lines: 26 On Mon, 22 Oct 2012, Ezequiel Garcia wrote: > SLUB handles large kmalloc allocations falling back > to page-size allocations (kmalloc_large, etc). > This path doesn't touch NR_SLAB_XXRECLAIMABLE zone item state. Right. UNRECLAIMABLE allocations do not factor in reclaim decisions. > Without fully understanding it, I've decided to implement the same > behavior for SLOB, > leaving page-size allocations unaccounted on /proc/meminfo. > > Is this expected / wanted ? Yes that is fine. > SLAB, on the other side, handles every allocation through some slab cache, > so it always set the zone state. Right but the caching barely has any effect at large sizes. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/