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 78DED41C44; Thu, 9 Feb 2023 01:12:18 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 11D2740DDA; Thu, 9 Feb 2023 01:12:18 +0100 (CET) Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) by mails.dpdk.org (Postfix) with ESMTP id 165244067B for ; Thu, 9 Feb 2023 01:12:17 +0100 (CET) Received: by mail-pj1-f43.google.com with SMTP id n20-20020a17090aab9400b00229ca6a4636so4494691pjq.0 for ; Wed, 08 Feb 2023 16:12:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=3ERfLr6jukAe2LKL9PxevP2+Chub3aP2sUJbCPBM7Xg=; b=dJqsuwvM1QW1iLoWFI72A1/Mc/3d5zw1ffy0YcGdBtaJQ4Hg0XAZQqx920Wfalz0FQ RctX1S3YZNeBjBbghuD+RRNQgVE2gjWjBtpqjQPVPNAUZm3elVrMFcEupWFDSJ7jcArf 1JN3DWy2AlUQLEzZZQVqCaXotB4Kk4xbVJSv+rwPocRzDHUR9ITGiAsOzqW9EuFg3ogk SHLiKW6wyYN2ppxUAgsnVVV7Ye/r/1qG42QHZHPP0B4atihp8Oy6BPJAcargdW8vs+k8 3Sf/0FnHnjkvTXgtTZWfFxLhBB3l35lo11Oh5s6PAUxXQ5PySj6TM3pWYdE8Te3gp21I 6B3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3ERfLr6jukAe2LKL9PxevP2+Chub3aP2sUJbCPBM7Xg=; b=2Ob8RkEfpaBfdt+hwaMZ4aryfhLWuQ9kdLavCrHby+PhXU7Le57UZ6E58Xlzf6zm/b dEb18KsaZw0jjDYySR4XSN+os2tnWcC7EUA1QsssdA+nrSYXR5GKLRqdgycpZv+IUJef GF7x593CTDNa3RAESbn7f4l+IUpBtsYYOkDfJEu6wB1lV5cifwNqyO9UeZUj1YeJLIMS zw2J3L1DsOHX4Bnf7zCJMC5muhyXIs2ZwQmVLVv6zV6M2mXSUzTR0xgpVi4RnXp5Nco5 6lE0Sdn/GwIJNjjf5sS2rT7dT4iCWvKNk1meNn/xM7/zlHD8XHDqDnoWiaDFalW40rLJ Wmng== X-Gm-Message-State: AO0yUKXHhEiW1uDJ+bm0gXO2bCZQiqFILUh3pNwzectedo/VNEaU2aCd GXw/fw9TE1KFji5lBaYsQQ4aurIyTEA1uL2yYmM= X-Google-Smtp-Source: AK7set+2Azt9ZEk6mIgLm+w3EvhArLecL+yuxZ2hLsh0yjm7PWWbigC6XEBG1IttePYuTA6Mh6exdA== X-Received: by 2002:a05:6a20:b717:b0:bf:58d1:ce8f with SMTP id fg23-20020a056a20b71700b000bf58d1ce8fmr115789pzb.14.1675901536132; Wed, 08 Feb 2023 16:12:16 -0800 (PST) Received: from hermes.local (204-195-120-218.wavecable.com. [204.195.120.218]) by smtp.gmail.com with ESMTPSA id b28-20020a63931c000000b0049f77341db3sm97917pge.42.2023.02.08.16.12.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Feb 2023 16:12:15 -0800 (PST) Date: Wed, 8 Feb 2023 16:12:14 -0800 From: Stephen Hemminger To: =?UTF-8?B?THVrw6HFoSDFoGnFoW1pxaE=?= Cc: dev@dpdk.org Subject: Re: Outlook for DPDK multi-process support Message-ID: <20230208161214.58fc929e@hermes.local> In-Reply-To: <71e8deaf-82f0-407d-244b-322c40ad65ab@cesnet.cz> References: <71e8deaf-82f0-407d-244b-322c40ad65ab@cesnet.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Wed, 8 Feb 2023 15:03:43 +0100 Luk=C3=A1=C5=A1 =C5=A0i=C5=A1mi=C5=A1 wrote: > Hello all, >=20 >=20 > I'd like to ask you about future outlook of multi-process support in=20 > DPDK (https://doc.dpdk.org/guides/prog_guide/multi_proc_support.html). >=20 > On DPDK Userspace 2022, I have presented a solution that uses=20 > multi-process support (https://youtu.be/TtiR74w3Yv4) in Suricata IDS. >=20 > But after the talk, some people have reached out to me and suggested=20 > that multi-process support might not be supported in the long-term. Impossible to predict the future, but until/unless something better is deve= loped there will be users. >=20 > As I would like to continue developing the concept further, I thought it= =20 > might be a good idea to consult the idea and possibly open the discussion. >=20 >=20 > As an alternative solution to multi-process support I see either=20 > vhost-user/virtio/vDPA or VF. However, I couldn't find any performance=20 > benchmarks on this topic. The issue has been that some drivers and API's don't work with multi-process support. If it is in the documentation for the configuration it should work but like almost anything in software, until is implemented, tested, and mai= ntained there is no perfect way to tell.