Received: by 2002:a25:31c3:0:0:0:0:0 with SMTP id x186csp185541ybx; Tue, 29 Oct 2019 16:36:13 -0700 (PDT) X-Google-Smtp-Source: APXvYqxUhEYnUmaNHNKVGHNJb6yfRKaMH4DQrKd7bnwa/oE4ffMiFqtWppNa8otau6Wg8UlYjPyk X-Received: by 2002:a17:906:2584:: with SMTP id m4mr6177600ejb.287.1572392173674; Tue, 29 Oct 2019 16:36:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1572392173; cv=none; d=google.com; s=arc-20160816; b=v2SgfRu3ud3HkYBQ5Bt01uajQ6IZgZlg8uN87bG2tlS1zmZ2sahAKCg7gukZBxEylw BSQ1FLJxbGMdycyNRYLWGtR1zLn7edP1ZUVzL+EGZ0YOmmXlruz4i2BCsG6pl73W1nwf DB505G2OjvIlPMUsCHFuCIZBrtbY37eTA3bOGvGU0CUQ89ad1tjNA0ZZdZEEqJ0lFTpH PBB/G4lqMj5hCrxUtqX3d/afEumptgWFpUSEToZ2lpJf7z2V4NfteZxpZ5uD+1ocyN4U BCMZPa/c5MJqtlloyyBNZapZDxgklzzIOgOeclIUy+5stmx2Fupoxlhml1Tc8iUP0jXK IgqQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date; bh=yb0ufowluVK2iUk9Qxcly6Ci6BO4ODYRzyAVtdlKxAc=; b=vVJmTteRzKSkBtWWCVSj++yEziTjxV8tMR5prXkgTwuBKwUBHxdZ4lbYnN3bxIRLrk Mrxh62E6oVWb/OJ5kciweF1o/k61KHK4fnUPEsYFS4SgIv2+3ZnQyQtsdBZhhoNhZ9Ci ng9mogO+sTNXXABEwsu4HIdh5fNKVPowBFuLo+n6gbVEeqGBcZqtAa1qx76D0hIi3g7f unqQo9ls44Yfd/+uUY7Jtenu/78elpyCLpolt3GO6ew16S/F/aPNdwbH/7WGRGDLXrY/ nxQZ72QBBFgXK7l8lwCim4/KMXK8H8GPpVkNPJlTkZVPviodvPlCbgU/Fam0rvCsqSdN HWLQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c31si234148edb.56.2019.10.29.16.35.49; Tue, 29 Oct 2019 16:36:13 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726411AbfJ2XfC (ORCPT + 99 others); Tue, 29 Oct 2019 19:35:02 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:32958 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725974AbfJ2XfC (ORCPT ); Tue, 29 Oct 2019 19:35:02 -0400 Received: from localhost (unknown [IPv6:2601:601:9f00:1e2::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 8B4F414EBDEA6; Tue, 29 Oct 2019 16:35:01 -0700 (PDT) Date: Tue, 29 Oct 2019 16:35:00 -0700 (PDT) Message-Id: <20191029.163500.1140263160760085187.davem@davemloft.net> To: xiaojiangfeng@huawei.com Cc: yisen.zhuang@huawei.com, salil.mehta@huawei.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, leeyou.li@huawei.com, zhanghan23@huawei.com, nixiaoming@huawei.com, zhangqiang.cn@hisilicon.com, dingjingcheng@hisilicon.com, joe@perches.com Subject: Re: [PATCH v2] net: hisilicon: Fix ping latency when deal with high throughput From: David Miller In-Reply-To: <1572239386-67767-1-git-send-email-xiaojiangfeng@huawei.com> References: <1572239386-67767-1-git-send-email-xiaojiangfeng@huawei.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 29 Oct 2019 16:35:01 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiangfeng Xiao Date: Mon, 28 Oct 2019 13:09:46 +0800 > This is due to error in over budget processing. > When dealing with high throughput, the used buffers > that exceeds the budget is not cleaned up. In addition, > it takes a lot of cycles to clean up the used buffer, > and then the buffer where the valid data is located can take effect. > > Signed-off-by: Jiangfeng Xiao Applied and queued up for -stable, thanks.