From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f71.google.com (mail-wm0-f71.google.com [74.125.82.71]) by kanga.kvack.org (Postfix) with ESMTP id 3A7056B0069 for ; Fri, 14 Oct 2016 11:26:20 -0400 (EDT) Received: by mail-wm0-f71.google.com with SMTP id f193so1160029wmg.3 for ; Fri, 14 Oct 2016 08:26:20 -0700 (PDT) Received: from mail-wm0-f49.google.com (mail-wm0-f49.google.com. [74.125.82.49]) by mx.google.com with ESMTPS id k88si289442wmh.15.2016.10.14.08.26.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 14 Oct 2016 08:26:18 -0700 (PDT) Received: by mail-wm0-f49.google.com with SMTP id c78so580663wme.1 for ; Fri, 14 Oct 2016 08:26:18 -0700 (PDT) Date: Fri, 14 Oct 2016 17:26:16 +0200 From: Michal Hocko Subject: Re: some question about order0 page allocation Message-ID: <20161014152615.GB6105@dhcp22.suse.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: yoma sophian Cc: linux-mm@kvack.org On Fri 14-10-16 17:29:34, yoma sophian wrote: [...] > [ 5515.127555] dialog invoked oom-killer: gfp_mask=0x80d0, order=0, > oom_score_adj=0 This looks like a GFP_KERNEL + something allocation > [ 5515.444859] Normal: 4314*4kB (UEMC) 3586*8kB (UMC) 131*16kB (MC) > 21*32kB (C) 6*64kB (C) 1*128kB (C) 0*256kB 0*512kB 0*1024kB 0*2048kB > 0*4096kB = 49224kB And it seems like CMA blocks are spread in all orders and no unmovable allocations can fallback in them. It seems that there should be some movable blocks but I do not have any idea why those are not used. Anyway this is where I would start investigating. -- Michal Hocko SUSE Labs -- 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/ . Don't email: email@kvack.org