From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f200.google.com (mail-wr0-f200.google.com [209.85.128.200]) by kanga.kvack.org (Postfix) with ESMTP id 676F26B02F3 for ; Fri, 9 Jun 2017 12:35:29 -0400 (EDT) Received: by mail-wr0-f200.google.com with SMTP id v104so9239801wrb.6 for ; Fri, 09 Jun 2017 09:35:29 -0700 (PDT) Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id i11si1884519wra.167.2017.06.09.09.35.27 for (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 09 Jun 2017 09:35:28 -0700 (PDT) Date: Fri, 9 Jun 2017 18:35:21 +0200 From: Michal Hocko Subject: Re: [RFC v4 00/20] Speculative page faults Message-ID: <20170609163520.GB9332@dhcp22.suse.cz> References: <1497018069-17790-1-git-send-email-ldufour@linux.vnet.ibm.com> <20170609150126.GI21764@dhcp22.suse.cz> <83cf1566-3e76-d3fa-10a8-d83bbf9fd568@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <83cf1566-3e76-d3fa-10a8-d83bbf9fd568@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Laurent Dufour Cc: paulmck@linux.vnet.ibm.com, peterz@infradead.org, akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, dave@stgolabs.net, jack@suse.cz, Matthew Wilcox , linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com On Fri 09-06-17 17:25:51, Laurent Dufour wrote: [...] > Thanks Michal for your feedback. > > I mostly focused on this database workload since this is the one where > we hit the mmap_sem bottleneck when running on big node. On my usual > victim node, I checked for basic usage like kernel build time, but I > agree that's clearly not enough. > > I try to find details about the 'kbench' you mentioned, but I didn't get > any valid entry. > Would you please point me on this or any other bench tool you think will > be useful here ? Sorry I meant kernbech (aka parallel kernel build). Other highly threaded workloads doing a lot of page faults and address space modification would be good to see as well. I wish I could give you much more comprehensive list but I am not very good at benchmarks. -- 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