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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 04565C433DB for ; Tue, 9 Feb 2021 12:43:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7F6464E60 for ; Tue, 9 Feb 2021 12:43:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230373AbhBIMms (ORCPT ); Tue, 9 Feb 2021 07:42:48 -0500 Received: from mx2.cyber.ee ([193.40.6.72]:45219 "EHLO mx2.cyber.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230264AbhBIMkw (ORCPT ); Tue, 9 Feb 2021 07:40:52 -0500 Subject: Re: [PATCH v3] sched/topology: fix the issue groups don't span domain->span for NUMA diameter > 2 To: Barry Song , valentin.schneider@arm.com, vincent.guittot@linaro.org, mgorman@suse.de, mingo@kernel.org, peterz@infradead.org, dietmar.eggemann@arm.com, morten.rasmussen@arm.com, linux-kernel@vger.kernel.org Cc: linuxarm@openeuler.org, xuwei5@huawei.com, liguozhu@hisilicon.com, tiantao6@hisilicon.com, wanghuiqiang@huawei.com, prime.zeng@hisilicon.com, jonathan.cameron@huawei.com, guodong.xu@linaro.org References: <20210209082125.22176-1-song.bao.hua@hisilicon.com> From: Meelis Roos Message-ID: Date: Tue, 9 Feb 2021 14:40:05 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210209082125.22176-1-song.bao.hua@hisilicon.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I did a rudimentary benchmark on the same 8-node Sun Fire X4600-M2, on top of todays 5.11.0-rc7-00002-ge0756cfc7d7c. The test: building clean kernel with make -j64 after make clean and drop_caches. While running clean kernel / 3 tries): real 2m38.574s user 46m18.387s sys 6m8.724s real 2m37.647s user 46m34.171s sys 6m11.993s real 2m37.832s user 46m34.910s sys 6m12.013s While running patched kernel: real 2m40.072s user 46m22.610s sys 6m6.658s for real time, seems to be 1.5s-2s slower out of 160s (noise?) User and system time are slightly less, on the other hand, so seems good to me. -- Meelis Roos