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 27CD8A0597 for ; Thu, 9 Apr 2020 16:58:22 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 18C451C2F0; Thu, 9 Apr 2020 16:58:22 +0200 (CEST) Received: from mail-pf1-f195.google.com (mail-pf1-f195.google.com [209.85.210.195]) by dpdk.org (Postfix) with ESMTP id 5BF331C2EB for ; Thu, 9 Apr 2020 16:58:20 +0200 (CEST) Received: by mail-pf1-f195.google.com with SMTP id v23so4880425pfm.1 for ; Thu, 09 Apr 2020 07:58:20 -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=WWE+GAZGUZGCZy2hQyqZBlQM7YMnK7Dh6OJWfMsc2Q4=; b=Au8EndtlG5KVK6AfXym6+84is9re3VzmBLebSj4onvA3lr1ILd4dSrIkwDLM6Rm0eo spjJAZb3ULwScnen46mBQbfKKNjOt4Aog2nTuaeOjdSe2Cdc0GQfkDxJWo1XHLh45G6S 5/80wbD/0BgBkLc3nGKi4Qn8rHi4GlEtPsFLzqPx5XDavpv2I1bPLrhz57do1WYzsUkp 0nH5wj27qMo0jh7pOs0XTx9u0QV81T59wo6fTiUR5QRQeGD49IyKJI06MoRV/t02rpuK iIX8Rqg2/VAvmx4GX8tIdRwzqv+zdYUJ+7UuE+nQAE2jBeOdPpXYdcpAvjmRas9Qp6ke in6g== 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=WWE+GAZGUZGCZy2hQyqZBlQM7YMnK7Dh6OJWfMsc2Q4=; b=bjg0QA5r4Jx7BciBuDOmOOoc0vGWJ7O9mJ8c4GILIl2f1dia91derxBuez3AHSaYCt Rd5ybCbdFfRNvx8e0Y3Lrv0Vtrd7fAjTbcPTnxpnuQ5DXMCwihE4fXNATTrOXpjRd8tb IbZg5Yvb9MKa0kwilX5CvFvDCF6s5p6cLWmUsG9BY/Yotm2iMlDCeJd23v3+3Q0W4PI3 a8JfRwKHwP+P7ZPuCqCF6i/Zh/6SmUpgEBQBnNW2q0xaKFREUtrkNL2exSnHTjffLmum 6Jd9TmStvP7IxA77OEmMxQ4nfKCrNuOJbr7BveEqzrxqihO6LXFlWJgJvEmWbC6n+Loz 4cUw== X-Gm-Message-State: AGi0PuaY/PIJkeZg63wnj2DqLZ3QJ3KcDLRm1p4/enf7ahOgvNIuASIg YACWnkIu+zDH0MIh4LZ/bFjwng== X-Google-Smtp-Source: APiQypKvI5Owpi8uVrD5Sv2pxjDgG/3nNN82JaVNyK5Uo8jym9a6mmpUDP+0/zH2EaM9a51qjr2NaA== X-Received: by 2002:aa7:9207:: with SMTP id 7mr6564532pfo.178.1586444299481; Thu, 09 Apr 2020 07:58:19 -0700 (PDT) Received: from hermes.lan (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id w205sm19389028pfc.75.2020.04.09.07.58.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2020 07:58:19 -0700 (PDT) Date: Thu, 9 Apr 2020 07:58:16 -0700 From: Stephen Hemminger To: Cristofer Martins Cc: "users@dpdk.org" Message-ID: <20200409075816.77217cc9@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] General Questions 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 Thu, 9 Apr 2020 06:11:28 +0000 Cristofer Martins wrote: > Well the reason i thought about using dpdk(together with a user space tcp stack) is because my tcp code spend so much time with syscalls that removing that would allow better throughput and latency. Is this a valid reason? My software runs in single core(and most of time in cheap vps) so i want to extract the best i can from them. > The other question is, can dpdk runs alongside with the linux network stack? I want to use dpdk in my special app but i still want to have ssh and apps working as expected without any modification. > > Thanks in advance. > If you are doing syscalls in your DPDK application, then you are defeating the point of DPDK and you are better off using the kernel networking stack.