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 CCB322B94 for ; Sun, 28 Oct 2018 01:36:27 +0200 (CEST) Received: by mail-it1-f172.google.com with SMTP id e74-v6so5701587ita.2 for ; Sat, 27 Oct 2018 16:36:27 -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=/yq2aP7D5oaGFCsdZNQw59JzNrJLseoyzwGZdojgHAQ=; b=Nvn5mKzIWsLCaUMhj1Mve2TxhcAfCf+aFcm10zukooDb4YcmJCuw2xIIY+BZ3BEHTy sPSvLL+W3NnNUUv6BFMev4H7Uc1oconh154tMoD0Soc3xOkz3UycxKH8B55JgM21tXW1 hJObPFnkiYJAo0NRBZNjNYQV8v1idk6h2/siSOcg/+SHokUmtiDFgDQTwq8Z/v4UGhzr 9RusxbKBcfBfqA8AqTmNd3a0CnNopBXUqjBt48LUd43ZSwgIL222GRF0QIZ9TZyztjEJ rtDw6o/0i9CJn+RLM1JRzG8OB4ZPUEZWeVbALfwNdGb/QrOt289PM6ehZsQekMCwgc3X 0GVQ== 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=/yq2aP7D5oaGFCsdZNQw59JzNrJLseoyzwGZdojgHAQ=; b=Fxt4wwj3gjjJ94YetagjrrJXfRagJkhO8Q4VJJ2Viz39uw6I0bxxGy0jWWQa5zkKyQ x+18Aw0r/Fgs1n+XHTo5mIwYDZIjn7VsyjWcvKndjrLjA9r+R21JgJQyf6M3oEglYe9c qCPJvea1RT7JOWWqSrB7UrvYuFfSSrBlrVZEepVK36QsAsCHu+b4k9R454Rk/VUcE2W0 Lk7wbFJr4t899w1N8WMS568f4UL4ACkaq/K+XyoErrwtSZTj9tDQvEDNlcGXBEta4t6H Xh6XXPZ/uKDQHDlfLeTPRDC57nkem0bEPhhA7Yh2t/o38IobnrrLbeEBRnwoexoXM0WE N2EA== X-Gm-Message-State: AGRZ1gJnYnxJHxYCoM1Xuy3AOY1H8g/GIitj75NXCYfW6x/Sil2r3zL3 GDYz2iDB1kbE5lQ8p/haQNYqXqqqxg0Bt/H8dWyjTxA3 X-Google-Smtp-Source: AJdET5ft33+ABV1PjRnkgwOoyYjbUavI3fxubabEHrs3kxSwJou0S3AO2WetFSnT0uf6kWKtmf9sZtch+IWlAWW+lkE= X-Received: by 2002:a24:958a:: with SMTP id m132-v6mr7108909itd.106.1540683386882; Sat, 27 Oct 2018 16:36:26 -0700 (PDT) MIME-Version: 1.0 From: Sungho Hong Date: Sat, 27 Oct 2018 16:36:15 -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: Sat, 27 Oct 2018 23:36:29 -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