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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 84788C43462 for ; Fri, 30 Apr 2021 03:12:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 58459613C1 for ; Fri, 30 Apr 2021 03:12:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229902AbhD3DMq (ORCPT ); Thu, 29 Apr 2021 23:12:46 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:3409 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229577AbhD3DMp (ORCPT ); Thu, 29 Apr 2021 23:12:45 -0400 Received: from dggeml759-chm.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4FWclL5LyFz5vwS; Fri, 30 Apr 2021 11:08:46 +0800 (CST) Received: from dggpemm500005.china.huawei.com (7.185.36.74) by dggeml759-chm.china.huawei.com (10.1.199.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 30 Apr 2021 11:11:55 +0800 Received: from [127.0.0.1] (10.69.30.204) by dggpemm500005.china.huawei.com (7.185.36.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Fri, 30 Apr 2021 11:11:55 +0800 Subject: Re: [PATCH net v4 1/2] net: sched: fix packet stuck problem for lockless qdisc From: Yunsheng Lin To: Michal Kubecek CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , References: <1618535809-11952-1-git-send-email-linyunsheng@huawei.com> <1618535809-11952-2-git-send-email-linyunsheng@huawei.com> <20210419152946.3n7adsd355rfeoda@lion.mk-sys.cz> <20210419235503.eo77f6s73a4d25oh@lion.mk-sys.cz> <20210420203459.h7top4zogn56oa55@lion.mk-sys.cz> <80d64438-e3e5-e861-4da0-f6c89e3c73f7@huawei.com> <20210421053123.wdq3kwlvf72kwtch@lion.mk-sys.cz> <6a8dea49-3a3e-4172-1d65-5dbcb0125eda@huawei.com> <20210421084428.xbjgoi4r2d6t65gy@lion.mk-sys.cz> Message-ID: Date: Fri, 30 Apr 2021 11:11:55 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.69.30.204] X-ClientProxiedBy: dggeme718-chm.china.huawei.com (10.1.199.114) To dggpemm500005.china.huawei.com (7.185.36.74) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On 2021/4/23 17:42, Yunsheng Lin wrote: > On 2021/4/21 17:25, Yunsheng Lin wrote: >> On 2021/4/21 16:44, Michal Kubecek wrote: >> >>> >>> I'll try running some tests also on other architectures, including arm64 >>> and s390x (to catch potential endinanity issues). > > I tried debugging nperf in arm64, with the below patch: > > Any idea what went wrong here? > > Also, Would you mind running netperf to see if there is similar issue > in your system? Hi, Michal I was able to reproduce the fluctuation for one thread TCP_STREAM test, So I am assuming it may more related to test environment or nperf issue. I plan to send v5 with netdev queue stopped handling after the golden holiday in china. If there is any issue with patchset, please let me know, thanks. > >>> >>> Michal >>> >>> . >>> >> >> >> . >> > > > . >