From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id CC9C96B0087 for ; Wed, 24 Nov 2010 09:14:47 -0500 (EST) Received: by gxk25 with SMTP id 25so21894gxk.14 for ; Wed, 24 Nov 2010 06:14:46 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: <20101122161158.02699d10.akpm@linux-foundation.org> <1290501502.2390.7029.camel@nimitz> <1290529171.2390.7994.camel@nimitz> Date: Wed, 24 Nov 2010 15:14:46 +0100 Message-ID: Subject: Re: Sudden and massive page cache eviction From: =?UTF-8?Q?Peter_Sch=C3=BCller?= Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org To: Dave Hansen Cc: Andrew Morton , linux-kernel@vger.kernel.org, Mattias de Zalenski , linux-mm@kvack.org List-ID: >> Do you have any large page (hugetlbfs) or other multi-order (> 1 page) >> allocations happening in the kernel? I forgot to address the second part of this question: How would I best inspect whether the kernel is doing that? Looking at the kmalloc() sizes from vmstat -m I have the following on one of the machines (so very few larger than 4096). But I suspect you are asking for something different? kmalloc-8192 52 56 8192 4 kmalloc-4096 33927 62040 4096 8 kmalloc-2048 338 416 2048 16 kmalloc-1024 76211 246976 1024 32 kmalloc-512 1134 1216 512 32 kmalloc-256 109523 324928 256 32 kmalloc-128 3902 4288 128 32 kmalloc-64 105296 105536 64 64 kmalloc-32 2120 2176 32 128 kmalloc-16 4607 4608 16 256 kmalloc-8 6655 6656 8 512 kmalloc-192 6546 9030 192 21 kmalloc-96 29694 32298 96 42 -- / Peter Schuller aka scode -- 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