Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149Ab2JVOlj (ORCPT ); Mon, 22 Oct 2012 10:41:39 -0400 Received: from a193-30.smtp-out.amazonses.com ([199.255.193.30]:45532 "EHLO a193-30.smtp-out.amazonses.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754116Ab2JVOli (ORCPT ); Mon, 22 Oct 2012 10:41:38 -0400 Date: Mon, 22 Oct 2012 14:41:37 +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: <1350907434-2202-1-git-send-email-elezegarcia@gmail.com> Message-ID: <0000013a88ebfa65-af0fc24b-13fd-400f-b7fc-32230ca70620-000000@email.amazonses.com> References: <1350907434-2202-1-git-send-email-elezegarcia@gmail.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: 865 Lines: 21 On Mon, 22 Oct 2012, Ezequiel Garcia wrote: > On page allocations, SLAB and SLUB modify zone page state counters > NR_SLAB_UNRECLAIMABLE or NR_SLAB_RECLAIMABLE. > This allows to obtain slab usage information at /proc/meminfo. > > Without this patch, /proc/meminfo will show zero Slab usage for SLOB. > > Since SLOB discards SLAB_RECLAIM_ACCOUNT flag, we always use > NR_SLAB_UNRECLAIMABLE zone state item. Hmmm... that is unfortunate. The NR_SLAB_RECLAIMABLE stat is used by reclaim to make decisions on when to reclaim inodes and dentries. Could you fix that to properly account the reclaimable/unreclaimable pages? -- 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/