From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id BCF69426B6 for ; Wed, 4 Oct 2023 08:17:26 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2A7514029A; Wed, 4 Oct 2023 08:17:26 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mails.dpdk.org (Postfix) with ESMTP id EFF2B40289 for ; Wed, 4 Oct 2023 08:17:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1696400243; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sV8PZ0b4j4KNxMRMfCOBrum5CxmzqxJRYeocqxdV1WA=; b=iDEqep/88s7JkkPSxyf39dF2hXJEPr/bItG3vqgB9gAWIIZCIHJtb/Vx4eQANCyO3819hA Zw3EDrOFdI90Vp+zrgWrGHkPQ9NEQEAL/BQ/OrGVF1lQZZqlkx266J4V2rXxnl08KylWZW KxmeLtYsD9vxaKalRxruOJmx0fQPTcE= Received: from mail-lf1-f72.google.com (mail-lf1-f72.google.com [209.85.167.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-489-ldK4Hl2DNzOOzB8UJI5icg-1; Wed, 04 Oct 2023 02:17:21 -0400 X-MC-Unique: ldK4Hl2DNzOOzB8UJI5icg-1 Received: by mail-lf1-f72.google.com with SMTP id 2adb3069b0e04-50428596a79so569683e87.0 for ; Tue, 03 Oct 2023 23:17:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696400239; x=1697005039; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sV8PZ0b4j4KNxMRMfCOBrum5CxmzqxJRYeocqxdV1WA=; b=wWrv5varyJ2J2nxr3E0nCXiOXiPSUXuhRgIlxD/Wk+2IDp/xfqr+xGbx/2mCu8kEgz 4AwVY86AH337cytTdqgk2Sqaj0ISa6wCL8P/MVScOAe78YpqMkLI086+nyYg057vdeQ5 aboaaLdiOLfytoA1BWHThZpsi74DQa3kv69bhyZkyPs+nLdBXGFeXpk3I7XVs4zwQpvI vmQFI5FzRQgy+fmCCzzp7IhCf8BGd86033RO+cSZA8fi4rNqbtWJVi6jIHPnzZeGkN+e yo172nEfmqwfbQKaLcWag45Ve32iFNsTkDOZgDJFQ6OHychu7OmVZSlzWFKqcmrhuGYB Q37g== X-Gm-Message-State: AOJu0YzdzX+z7dlWNq4n7EiiVLb7OnrS6wS524zxK8QWOV4/muuGCAMg tt7gvmxF1wPa+5jyvyXiLYYGWiIB9IJ+x5BKtm/ACrMEiBpcTV9YRYjumWwFlTWhE/B2tZwfrDH rDQAScfdEXOQzZoPkXYQuCg== X-Received: by 2002:a05:6512:aca:b0:500:943f:11c9 with SMTP id n10-20020a0565120aca00b00500943f11c9mr4177964lfu.3.1696400239666; Tue, 03 Oct 2023 23:17:19 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHhamPOwXBH7VmPm6+Ai8ZYgJcBxfoDsOH6jxmb+lT4dWuxEc7j0muLcwaDk8ScFF7G/oJN4+X2mkjzdIw25ss= X-Received: by 2002:a05:6512:aca:b0:500:943f:11c9 with SMTP id n10-20020a0565120aca00b00500943f11c9mr4177949lfu.3.1696400239298; Tue, 03 Oct 2023 23:17:19 -0700 (PDT) MIME-Version: 1.0 References: <20231002142133.27590624@hermes.local> <20231003090112.77cd1d2c@hermes.local> In-Reply-To: <20231003090112.77cd1d2c@hermes.local> From: David Marchand Date: Wed, 4 Oct 2023 08:17:08 +0200 Message-ID: Subject: Re: tap device speed To: Stephen Hemminger , Antonio Di Bacco Cc: users@dpdk.org, Maxime Coquelin X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org On Tue, Oct 3, 2023 at 6:01=E2=80=AFPM Stephen Hemminger wrote: > > On Tue, 3 Oct 2023 10:49:16 +0200 > Antonio Di Bacco wrote: > > > I understand, could we use another solution ? Like a memif interface > > in DPDK and libmemif in Linux? > > The issue is accessing kernel networking devices. Both virtio user > and XDP are faster for that. Memif is for doing process to process networ= king. For dpdk <-> kernel, as you are mentioning virtio-user/vhost, let me add that there is some activity on this side, with VDUSE. Maxime is working on the VDUSE kernel and dpdk bits. He gave a talk about the current status during the summit and some performance numbers: https://dpdksummit2023.sched.com/event/1P9xA/vduse-performance-how-fast-is-= it-maxime-coquelin-red-hat --=20 David Marchand