From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F40AFC43215 for ; Thu, 21 Nov 2019 18:04:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD6CC206CC for ; Thu, 21 Nov 2019 18:04:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574359446; bh=1jgzamKxvcY1tfDe6mbz/HAF10TIHWqDUszuqFoLJXM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=L4d628yUfcEMpzD5BDDC6xddEemo6euvIBmq7wCeV5rZTMUEy0GZ9MFHiV6sYVtf+ Zyv4pJmNEg7A+jodiAfhbhhn8so5rzF5RbQe8Ti4IpfphP4LsPiIaq/fi9CyShNqEn XCin52apHX2kQ8ck5L3aMd6CCX95uhgEmOIA6SmQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727050AbfKUSEF (ORCPT ); Thu, 21 Nov 2019 13:04:05 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:41869 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726985AbfKUSEF (ORCPT ); Thu, 21 Nov 2019 13:04:05 -0500 Received: by mail-wr1-f67.google.com with SMTP id b18so5554169wrj.8 for ; Thu, 21 Nov 2019 10:04:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=iMS8WThQLgXSYyBxSADTHOAcqudcuVlRYct6kXLQmYg=; b=uJnZ/emTRW6j6tjuZ5oDn05X+dEO/fH3XbtAgolT+0BJnCymBREzjd0kn+0xKE1UsV YpdapDesOJOqfmfJqmY6EJhww4CIQmGcZcTqu/CT2jbbVQjx/3MbstTLl665ajC+RehW gB6HAdAQsME/Z0ylMJaKWq8dy04hHYiQ1d8e8Yn4+4Yrcv4rmgMNiuCdQ4Zps5f0OQDQ qETynPMk4wEZAVwt2yvu++r+wzrp+Vc5t8mHG0JYyRM6WMN+hkGX0nUdGICdSlYjY8F0 jv2UEQeNCQoe5Cy3/j+svpJ7erIGqblAO4IOLUGXLi9u6NkR7ENUU1S2eyKU4NjCVKf2 Veaw== X-Gm-Message-State: APjAAAXyCB0Rz3EVj5OWAj9YUViqh1V1lawMqF1ivSP7SpSB4kogxFmq 8uortV+Fssv4JzzOfYVJR7Q= X-Google-Smtp-Source: APXvYqyu+Eq7u50JFAbXTk9DnsWsPzHOCn7SZlNlBn2hxw+SJW8ZwTVVzQDhHlOIKA/BwIJSnyuEwg== X-Received: by 2002:a5d:4991:: with SMTP id r17mr12620993wrq.176.1574359443578; Thu, 21 Nov 2019 10:04:03 -0800 (PST) Received: from localhost (ip-37-188-163-220.eurotel.cz. [37.188.163.220]) by smtp.gmail.com with ESMTPSA id u18sm4201832wrp.14.2019.11.21.10.04.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Nov 2019 10:04:02 -0800 (PST) Date: Thu, 21 Nov 2019 19:04:01 +0100 From: Michal Hocko To: Pengfei Li Cc: akpm@linux-foundation.org, mgorman@techsingularity.net, vbabka@suse.cz, cl@linux.com, iamjoonsoo.kim@lge.com, guro@fb.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC v1 00/19] Modify zonelist to nodelist v1 Message-ID: <20191121180401.GL23213@dhcp22.suse.cz> References: <20191121151811.49742-1-fly@kernel.page> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191121151811.49742-1-fly@kernel.page> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 21-11-19 23:17:52, Pengfei Li wrote: [...] > Since I don't currently have multiple node NUMA systems, I would be > grateful if anyone would like to test this series of patches. I didn't really get to think about the actual patchset. From a very quick glance I am wondering whether we need to optimize as there are usually only small amount of numa nodes. But I am quite busy so I cannot really do any claims. Anyway, you can test this even without NUMA HW. Have a look at numa=fake option (numa_emu_cmdline). Or you can use kvm/qemu which provides easy ways to setup a NUMA capable virtual machine. -- Michal Hocko SUSE Labs