From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f54.google.com (mail-pa0-f54.google.com [209.85.220.54]) by kanga.kvack.org (Postfix) with ESMTP id 830ED6B0031 for ; Fri, 24 Jan 2014 17:30:07 -0500 (EST) Received: by mail-pa0-f54.google.com with SMTP id fa1so3759331pad.13 for ; Fri, 24 Jan 2014 14:30:07 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTP id ye6si2598334pbc.200.2014.01.24.14.30.05 for ; Fri, 24 Jan 2014 14:30:06 -0800 (PST) Date: Fri, 24 Jan 2014 14:30:03 -0800 From: Andrew Morton Subject: Re: [patch 0/2] mm: reduce reclaim stalls with heavy anon and dirty cache Message-Id: <20140124143003.2629e9c2c8c2595e805c8c25@linux-foundation.org> In-Reply-To: <1390600984-13925-1-git-send-email-hannes@cmpxchg.org> References: <1390600984-13925-1-git-send-email-hannes@cmpxchg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Tejun Heo , Rik van Riel , Mel Gorman , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org On Fri, 24 Jan 2014 17:03:02 -0500 Johannes Weiner wrote: > Tejun reported stuttering and latency spikes on a system where random > tasks would enter direct reclaim and get stuck on dirty pages. Around > 50% of memory was occupied by tmpfs backed by an SSD, and another disk > (rotating) was reading and writing at max speed to shrink a partition. Do you think this is serious enough to squeeze these into 3.14? -- 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