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 DC6C9A0350 for ; Tue, 30 Jun 2020 17:04:16 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 986AF1C029; Tue, 30 Jun 2020 17:04:16 +0200 (CEST) Received: from mail-pf1-f173.google.com (mail-pf1-f173.google.com [209.85.210.173]) by dpdk.org (Postfix) with ESMTP id 8A7811C010 for ; Tue, 30 Jun 2020 17:04:15 +0200 (CEST) Received: by mail-pf1-f173.google.com with SMTP id f9so9554312pfn.0 for ; Tue, 30 Jun 2020 08:04:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=kTyhZsjBeKNEdtlTOK3TKBCEKFRf53v9lIm6X93nR2g=; b=V6hijwxbmUtXFNA0Y0KAnOV2f5e29KoKAZKtUSWTyRMr0DLpxUVrtHtx3caM/U7qAP 7AcYG2sfL1XYK2K3+64R3OtXPkuls9jKKwUoIm1qCNk7AmlXNkP9gfKUP6k/iWPVa4wc N15jbG+EYrZh/wbBvCmCouWTlKB69X2m/C4oTlbjNk507wFIUDPMogeG5dya86Vlqs7e skSMbmptcWBm5aWetQf4S4voULVJboz3uvhjYTJgrnpvybFU2qtAmf0H76Z6LIavSQSM 8i1Mt8J1crIfMHKpmydPzAqeqaKW+snAow/56J1sJyZkwNlS7G69I7QRGjN33zOjIZGN j1IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=kTyhZsjBeKNEdtlTOK3TKBCEKFRf53v9lIm6X93nR2g=; b=L+GoLVu2XHMSUWiSo1mHEZ//YEaa+4Yre+vE3C4rV6G+iGiG9gG5u4eyuFmtkGVNwX cZTTdzU0WPtt202O+l1bAZr2bl+/iQSj6TyvQfw2TDxybxSmVtMI7Zd32BI4Vh+0U2Ad YxQT8znj5arRCX9KRI6G/LkJsE+kZtzMJGFyzMBp5EJB0QW6a924xWOaERdrnqXRMDhy 0YUEbeDwCOrqZTK3Pa4UmeMOnVg7UfdJQ9o8fyqdB8aYdEEijp4der0hupRHyZAcj7P8 p0tpuZYXTou57i4wmB428/cbsFBYaTu7aUh0zpPLNB2rykim/LMhl63+ajdIy4ocyOcV BHjA== X-Gm-Message-State: AOAM5327TVJdxM2RSDC1s8PZvC//jsNVp9uOcawGhbsyYIE4b6MlzY7w 7VORwxLR9Dn3H9TDYVhp7qd1cQ== X-Google-Smtp-Source: ABdhPJyFXrjzfDmr6sken2I3gCiOvKj9iUfdKn44yxz09bKzOatWF7WIKvgB89FyG1bYXVFqYxqRYg== X-Received: by 2002:a63:c64c:: with SMTP id x12mr15367769pgg.362.1593529454726; Tue, 30 Jun 2020 08:04:14 -0700 (PDT) Received: from hermes.lan (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id u25sm2926702pfm.115.2020.06.30.08.04.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2020 08:04:14 -0700 (PDT) Date: Tue, 30 Jun 2020 08:04:11 -0700 From: Stephen Hemminger To: "Licj" <272465698@qq.com> Cc: "USERS" Message-ID: <20200630080411.72ac077c@hermes.lan> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-users] Can dpdk-pdump capture high speed traffic? X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" On Tue, 30 Jun 2020 15:33:53 +0800 "Licj" <272465698@qq.com> wrote: > I have two machines directly connected with Mellanox 56g nice. > > I am running pktgen-dpdk on one machine, and testpmd&dpdk-pdump on the other machine. One is for packet sending and the other is for recving. > > > The pktgen and testpmd both show 50Gbps traffic. But the pcap file only show several hundreds Mbps. The current packet capture has multiple context switches and packet copies. Also, it is limited by the speed of filesystem writes.