From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it1-f172.google.com (mail-it1-f172.google.com [209.85.166.172]) by dpdk.org (Postfix) with ESMTP id 399A9293B for ; Fri, 26 Oct 2018 22:37:58 +0200 (CEST) Received: by mail-it1-f172.google.com with SMTP id i76-v6so3259623ita.3 for ; Fri, 26 Oct 2018 13:37:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=QkL44aUsLNIiyLOLNlQEe8PEYV1Y8UMyFFDmKIzM3Q8=; b=DTRVL+H1du6NFWLh/jrOIqdk0FHINhUe4rvqkSAal+vApXbr2fgUvUBjJ6pur4/zEh URSKX5Rfjhwi0+zZFosf3w82hHtoRxlZcI/D+rWQLivTtASMwAmJqTWESuyema3BFpz/ eMxpCbMmZiOZmKRDz3fpucgJ7z6D28G/2h8K7mTZtaIxJTqaZGlIXlzIQP8r0rU16stW iBqcB5MKjJOfNIxFPT13QblTo7jexsS7pPqFPYOTcR1n41SAymjwirWkIczxT9ltAx4G OE1FmWBh+IDBBzRFvy4F+oKJCuFInGs6NiLGRweyLiTJfHrOc8zKdg5FOoh86XzvBmdC l44g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=QkL44aUsLNIiyLOLNlQEe8PEYV1Y8UMyFFDmKIzM3Q8=; b=bhrm4krOSK2y7glXSoIREVuHnaSb7BKZTah89Tt9YJgiHP58BRQZsUQwJKDdCD9+kd J3dJ4+6k58h4zOjEIXj6/Fbwwma/WK68KBxcTzudbuy4QbaJMiCUtSCEkswDJf94SjoL PQRVHLSQCc5if9gg2tb1tnuKPsgtl6zGgPygcISqXmBknVo+nqg3EyL1zQhslb7k7AQj xHX7TmRGyq5kt7PaLpQe7cgoDmzbYi65REWlu59+RpuBFTDK21ObM0IGZt/TwEf1F22f fF/RLB7Fg2D+KiEM8R8SxBqaFiISYVP3R9IOHkRiNXjqAUb3D/GqCPuxSPmK4WBqVXHY GiiA== X-Gm-Message-State: AGRZ1gJQnWYoVmGyrjk/btqmCsGdq932Ac/dlbML/ABJxIKw2TPmYrBf qsp1gx0tiFE33T1b8d2bLPTRjURCn0mm8oGnVi8CHuf4 X-Google-Smtp-Source: AJdET5eACfAs7J1voY8FhB49QRzNYhbBmT89GPHqt2EB0ywvgWUyXcUlQDAxMZYYETdoHGkeAEljw8xgQ/KN+9v6AKA= X-Received: by 2002:a24:c408:: with SMTP id v8-v6mr4262186itf.131.1540586277318; Fri, 26 Oct 2018 13:37:57 -0700 (PDT) MIME-Version: 1.0 From: Sungho Hong Date: Fri, 26 Oct 2018 13:37:46 -0700 Message-ID: To: users@dpdk.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Why DPDK latency is high when sending message in interval? 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: , X-List-Received-Date: Fri, 26 Oct 2018 20:37:58 -0000 Hello DPDK experts, I'am testing the performance of DPDK not on high speed polling but sending each packet with 100 microsecond interval. As same as the POSIX, DPDK performance degrades into 90 ~ 100 microsecond round-trip latency per 4KB message. Is there a way to improve the performance, when I am expecting to send the packet on 100 microsecond interval? And is there an explanation of the slowdown of DPDK when I am sending the packet on 100 microsecond interval? Any insights on this issue will be highly appreciated.. Thanks