From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id D3656A04BB; Fri, 11 Sep 2020 17:38:41 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id AA19D1B75C; Fri, 11 Sep 2020 17:38:40 +0200 (CEST) Received: from mail-ot1-f67.google.com (mail-ot1-f67.google.com [209.85.210.67]) by dpdk.org (Postfix) with ESMTP id 55CE81B13C for ; Fri, 11 Sep 2020 17:38:39 +0200 (CEST) Received: by mail-ot1-f67.google.com with SMTP id o6so8707743ota.2 for ; Fri, 11 Sep 2020 08:38:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=OGiotSnTHtHCoNiat3SdlJAoZT2oSCWHXC9CAGTl/V4=; b=Jv21nBOLIYDA23AOIYLZsYP12PeoHtbO3/ThwKW2iTT1P05lWxdx7rATWOutSho3wN Mob4Uxd+ALwiiNIFo+yacz/JoJ5v+yGsKFKbGmYMUjyngDtjTFsYteLnmvvrOS+a/38H AHLA5Qio2tZu6AbBqx8aPmiJPldL7YCxMPz9Y= 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=OGiotSnTHtHCoNiat3SdlJAoZT2oSCWHXC9CAGTl/V4=; b=DbmvOnJeWdAI/7WPAvkzLI77AaqY3z/WAhqpez6rXqFoJDmg+FF+ssbmHvihMgRPiN XZL6KwLJMx7q9b8BmKIPYlZQK6oXi3qPtSv7Kb89CUebNu7zfO5XhiLMqSVFk09O/Tx5 9iBvuxU4MUkq8AWNtf1K2DgIQ+bbMFMKKLIDuW0b3u2q8qsKjjBxMOpxNwJgb1Bn3HI+ ovXjiWgIEviBNVGf2zQjEFcgYV9azy22gYiUhdmr1W8T9qRvFqRw96Pr39Woo2E027Ta hBFYjNSAHj03UM265OkFSCL8YiU1klf4XEtd0X7VFtgGy6zXms8lVvhLe9d/qLrMKc7o 8L6Q== X-Gm-Message-State: AOAM532DxmKp2qOiIvyAcoYtMjjIKjK5crhZ3TLmTO4pbyE6+lX3H2bP 7t42phb/sp+GBLdTYvT6ffdIYfjWTxogQht+KJKZnQ== X-Google-Smtp-Source: ABdhPJyuqVU3Xuu9nelYdoy8Zplsp+130t6QDwPi1hp2oGISuqZBWa59XBjZb9mE2g+baPTYmN6RZYCWdRXZNwJ4dBE= X-Received: by 2002:a9d:8c7:: with SMTP id 65mr1601819otf.267.1599838718386; Fri, 11 Sep 2020 08:38:38 -0700 (PDT) MIME-Version: 1.0 References: <20200909155302.28656-1-lance.richardson@broadcom.com> <20200909155302.28656-8-lance.richardson@broadcom.com> <6d731137-affe-7a79-e468-6510edc2a3a4@intel.com> In-Reply-To: <6d731137-affe-7a79-e468-6510edc2a3a4@intel.com> From: Lance Richardson Date: Fri, 11 Sep 2020 11:38:27 -0400 Message-ID: To: Ferruh Yigit Cc: Ajit Khaparde , Somnath Kotur , dev@dpdk.org, Kalesh Anakkur Purayil Content-Type: text/plain; charset="UTF-8" Subject: Re: [dpdk-dev] [PATCH 07/12] net/bnxt: increase max burst size for vector mode X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Fri, Sep 11, 2020 at 11:19 AM Ferruh Yigit wrote: > > On 9/9/2020 4:53 PM, Lance Richardson wrote: > > Increase the maximum supported burst size for the bnxt vector > > mode PMD from 32 to 64. > > What is the motivation here? Like does it improve the performance? If so in > which conditions etc.. It would be nice to describe the why & impact. > How about this: net/bnxt: increase max burst size for vector mode Increase the maximum supported burst size for the bnxt vector mode PMD from 32 to 64. With larger burst sizes, per-burst overhead is amortized over more packets, improving overall performance. For small packets this has been measured to provide a 4-10% increase in single-core throughput with testpmd iofwd. Thanks, Lance