From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id 8CF2A6B002C for ; Wed, 12 Oct 2011 16:21:19 -0400 (EDT) Received: from hpaq3.eem.corp.google.com (hpaq3.eem.corp.google.com [172.25.149.3]) by smtp-out.google.com with ESMTP id p9CKLGXi000740 for ; Wed, 12 Oct 2011 13:21:16 -0700 Received: from pzk33 (pzk33.prod.google.com [10.243.19.161]) by hpaq3.eem.corp.google.com with ESMTP id p9CK8ZJ9001156 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Wed, 12 Oct 2011 13:21:14 -0700 Received: by pzk33 with SMTP id 33so1197604pzk.8 for ; Wed, 12 Oct 2011 13:21:09 -0700 (PDT) Date: Wed, 12 Oct 2011 13:21:07 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH -v2 -mm] add extra free kbytes tunable In-Reply-To: <4E959292.9060301@redhat.com> Message-ID: References: <20110901105208.3849a8ff@annuminas.surriel.com> <20110901100650.6d884589.rdunlap@xenotime.net> <20110901152650.7a63cb8b@annuminas.surriel.com> <65795E11DBF1E645A09CEC7EAEE94B9CB516CBBC@USINDEVS02.corp.hds.com> <4E959292.9060301@redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Rik van Riel Cc: Satoru Moriya , Randy Dunlap , Satoru Moriya , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "lwoodman@redhat.com" , Seiji Aguchi , Andrew Morton , Hugh Dickins , "hannes@cmpxchg.org" On Wed, 12 Oct 2011, Rik van Riel wrote: > How would this scheme work? > I suggested a patch from BFS that would raise kswapd to the same priority of the task that triggered it (not completely up to rt, but the highest possible in that case) and I'm waiting to hear if that helps for Satoru's test case before looking at alternatives. We could also extend the patch to raise the priority of an already running kswapd if a higher priority task calls into the page allocator's slowpath. -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org