From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x234.google.com (mail-ob0-x234.google.com [IPv6:2607:f8b0:4003:c01::234]) by dpdk.org (Postfix) with ESMTP id 0F0E6DE0 for ; Mon, 25 Nov 2013 21:17:43 +0100 (CET) Received: by mail-ob0-f180.google.com with SMTP id wo20so4778875obc.11 for ; Mon, 25 Nov 2013 12:18:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=o0KQaIgZFVe3vsARqesaGwZvdXskUluSfYQNk21fhs4=; b=GXZq0GfI9TAqyO5f0SoHmGZSkzm7WH3Rvy7xQ1+4PnTmnZiC/SZi+FIKWzamzGUVJe oM/ntrDQVdRE6sgGWjD6y73ebUN3bdtUHTOoNk7cfQ1vnZtg2pHXXVSSljsjg7uCdxGc 5/hF9iRBf3QoCBPFMGjt+FpL6TrobTd7E8loleHmm13qR6fzWY0BujSDgDoU0oGVVLs7 ZyNV3TMLCzVRbpFQ9Ht0A6UhGkkkRhMKWPy17yW78cMeWnKXsFp1++4B9yAI2BWYNcBi ffw5wLjocvbA8RwTbR8c4NJDGDGxD7IHGl4GAR6lvdh/YBR0MoZWBo0hEh5NEwu0JFyb 3mjA== MIME-Version: 1.0 X-Received: by 10.60.58.166 with SMTP id s6mr7915037oeq.40.1385410723211; Mon, 25 Nov 2013 12:18:43 -0800 (PST) Received: by 10.76.171.100 with HTTP; Mon, 25 Nov 2013 12:18:43 -0800 (PST) Date: Mon, 25 Nov 2013 21:18:43 +0100 Message-ID: From: Jun Han To: dev@dpdk.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-dev] Measuring latency X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Nov 2013 20:17:44 -0000 Hi, Does anyone know if there is a DPDK provided tool to measure latency of a packet traversal (i.e., when a packet is copied from the NIC to userspace)? Also, we are using rdtsc to measure processing delay in the userspace currently, but does anyone else have suggestions/experiences for other tools? Additionally, we want to locate the latency bottleneck. Has anyone looked into this? Would you share your experiences please? Thank you very much. Jun