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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 B08C4C34031 for ; Tue, 18 Feb 2020 22:07:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6F752206F4 for ; Tue, 18 Feb 2020 22:07:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cloudflare.com header.i=@cloudflare.com header.b="d8rO57ZZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F752206F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=cloudflare.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 065A56B0005; Tue, 18 Feb 2020 17:07:24 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0168D6B0006; Tue, 18 Feb 2020 17:07:23 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E6F026B0007; Tue, 18 Feb 2020 17:07:23 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0115.hostedemail.com [216.40.44.115]) by kanga.kvack.org (Postfix) with ESMTP id CED4C6B0005 for ; Tue, 18 Feb 2020 17:07:23 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 978D7824934B for ; Tue, 18 Feb 2020 22:07:23 +0000 (UTC) X-FDA: 76504634766.11.mind36_5d97ded39f226 X-HE-Tag: mind36_5d97ded39f226 X-Filterd-Recvd-Size: 3901 Received: from mail-qk1-f169.google.com (mail-qk1-f169.google.com [209.85.222.169]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Tue, 18 Feb 2020 22:07:23 +0000 (UTC) Received: by mail-qk1-f169.google.com with SMTP id c20so21173226qkm.1 for ; Tue, 18 Feb 2020 14:07:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=NQRm1HKqg4sASSbmlX3eEfnpvyJBvoOvTDtyKNLsJkE=; b=d8rO57ZZm8lN08wS4tLy2bFm+IjvouIwk9nD2MtDefIhDnAvgZKD06Lg+ScC9+1hTu Y9ZofnZg4TZHRXc+UlhawT32J7WHc1KlTUIIeJsB8/GVhqi23XnAKZBIDU4T9RBVhquC A8+l/wkkph4Rg8o73Z6EHG9VLGEMbuJTfhVCc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=NQRm1HKqg4sASSbmlX3eEfnpvyJBvoOvTDtyKNLsJkE=; b=Vk36DDF4B50j+vc5fs5UbDhd6MsVXTR24ndHVKieViEtklZ8Ox+Gc3XxV4UQB4pWZb BrLtOgI9DCm0a7/ye119LvlpZCgfpWifRIkL23W1EwtSbYu3oOuWZCCFgLKLD31bDvLN So4on7PIYuwqE7BAkcvmngIIQwVLeXKX2tLn9bueursBKMYRh8xud4WXWTLJ0o2/YbQb PfsgPRKej46t9P84SxfWgS5wrIe1QyGkygwEtIB+NWiNhI7igREl1iK+PlDyfTO9PnuI Wk55+f2dMlYOfjOuA93pRWiajlXLinSMSV+6V946cXmI5GcDSdc+5klcTgehH61kkfah 4gBg== X-Gm-Message-State: APjAAAVYJ0HQKZVmO40w47KOQrz/ba3f/dBEof89m0YAYZsZ2tgF9Te3 8RSQopsDoD/DmaquzZ8i30i08n8N/6lA7TJRcw17hQ== X-Google-Smtp-Source: APXvYqx/RloPJi6yib7qwQgKX9OKaGanXcj5DEfO+iW1+CzNRhjO4luAjNZw4R5G3xGJlYxiCra2h09Tch8/cnbf1XA= X-Received: by 2002:a37:717:: with SMTP id 23mr17581705qkh.34.1582063642335; Tue, 18 Feb 2020 14:07:22 -0800 (PST) MIME-Version: 1.0 References: <20200211101627.GJ3466@techsingularity.net> <20200212235525.GU3466@techsingularity.net> In-Reply-To: <20200212235525.GU3466@techsingularity.net> From: Ivan Babrou Date: Tue, 18 Feb 2020 14:07:11 -0800 Message-ID: Subject: Re: Reclaim regression after 1c30844d2dfe To: Mel Gorman Cc: linux-mm@kvack.org, linux-kernel , kernel-team , Andrew Morton , Rik van Riel , Vlastimil Babka Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: I won't have time to try the patch for the next three weeks or so, sorry. On Wed, Feb 12, 2020 at 3:55 PM Mel Gorman wrote: > > On Wed, Feb 12, 2020 at 02:45:39PM -0800, Ivan Babrou wrote: > > Here's a typical graph: https://imgur.com/a/n03x5yH > > > > * Green (numa0) and blue (numa1) for 4.19 > > * Yellow (numa0) and orange (numa1) for 5.4 > > > > These downward slopes on numa0 on 5.4 are somewhat typical to the > > worst case scenario. > > > > If I try to clean up data a bit from a bunch of machines, this is how > > numa0 compares to numa1 with 1h average values of free memory above > > 5GiB: > > > > * https://imgur.com/a/6T4rRzi > > > > I think it's safe to say that numa0 is much much worse, but I cannot > > be 100% sure that numa1 is free from adverse effects, they may be just > > hiding in the noise caused by rolling reboots. > > > > Ok, while I expected node 0 to be worse in general, a runaway boost due > to constant fragmentation would be a problem in general. In either case, > the patch should reduce the damage. Is there any chance that the patch > can be tested or would it be disruptive for you? > > -- > Mel Gorman > SUSE Labs