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 581C2A04C2; Thu, 14 Nov 2019 10:50:29 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 264192C08; Thu, 14 Nov 2019 10:50:29 +0100 (CET) Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) by dpdk.org (Postfix) with ESMTP id 635462BAE; Thu, 14 Nov 2019 10:50:28 +0100 (CET) Received: by mail-lj1-f179.google.com with SMTP id p18so5953634ljc.6; Thu, 14 Nov 2019 01:50:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=a2VVO6h8hF7hHUqga6rOfJoYHWsxrc8ii9K7FPeGW48=; b=tbAJA3QaIz9RsJPUvioMfHqBqdymNBJL2tmZw4n0mp6reEncalSKX3JqVTj1xYVU2F Jv80Hqn1RoiJ2e86q5cN86cwyLRv98lbcNH6p0H2jE9XtADePOlLZ+t+1OeVGSxzjWRK FYjsNl8xxY1BCoxtKi3vhYqQLMwGkU3sAW2jP9akXfIFIgP2eZ9eYSimj0fZKsAMvRgW zjwyoH3RLlqa6EA9B+h0MAOX1C8EAGntw/y45WwA/U9gZklXnkYu6Z5blhn+nOyxGO85 oFZ3c4mDXMbeRZosmsOppCCaZO4aR56pGO10l4F898QHkZInWKiiQUlwmyB1mX2RtPlW +JyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=a2VVO6h8hF7hHUqga6rOfJoYHWsxrc8ii9K7FPeGW48=; b=Wcq0AEJMO+cmoq1wAMdvJb/leMpwfZwbS9IXM6wziafykjOk2zSAxhCZn8HcIsW6WU CeLePHapGvDzBM4r2i4+PJSELsKfdgaoaHfC6NinilffEvgs18n2gqJ3ZaBy3/5ip0Df oEKfb+wy1dY0aDXU8OnZzEnrJ62OI4OjMW16e5zKlOkFWHWNBxA9BgLqDqQqfILtrsnb SBeQnckGxvaujtm+rro74FNliFqsr3YZgU0j7RrQiUZTGBKQxjw3KLeHIeq/5sLrGzJW MrjVh1Z3FxKNn7e9FAH9MdU1dhnVfq/VJnpOy0B/CLjWvElaCdDkPiIuUTtykFmyGW1r Ntjg== X-Gm-Message-State: APjAAAX4gfk3Vllu5fGXdhK7wrJxSFw9JFbENqqrXc4OgNno+pDPJGGq kukA93+0Tx97+9tTsAIqEDTBIFx05Rz/8LIozPQ= X-Google-Smtp-Source: APXvYqx2VKMg7jufE2JqIb9r5FnVBQR+9mZwu3Wc+iBYmFCQ0TzKzA9CUOVNbFBuL8PVkmqOG//Usz9ki/+eqKeLU3s= X-Received: by 2002:a2e:b0f6:: with SMTP id h22mr5715826ljl.171.1573725027714; Thu, 14 Nov 2019 01:50:27 -0800 (PST) MIME-Version: 1.0 References: <20191113091927.GA1501@bricha3-MOBL.ger.corp.intel.com> <70f4e9f0-70f7-aa4a-6c5d-c24308d196c2@intel.com> <3c014e01-3635-df19-a11c-2db09b03d423@intel.com> In-Reply-To: <3c014e01-3635-df19-a11c-2db09b03d423@intel.com> From: Venumadhav Josyula Date: Thu, 14 Nov 2019 15:20:16 +0530 Message-ID: To: "Burakov, Anatoly" Cc: Bruce Richardson , users@dpdk.org, dev@dpdk.org, Venumadhav Josyula Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-dev] time taken for allocation of mempool. X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi Anatoly, Thanks for quick response. We want to understand, if there will be performance implications because of iova-mode being va. We want to understand, specifically in terms following - cache misses - Branch misses etc - translation of va addr -> phy addr when packet is receieved Thanks and regards Venu On Thu, 14 Nov 2019 at 15:14, Burakov, Anatoly wrote: > On 13-Nov-19 9:01 PM, Venumadhav Josyula wrote: > > Hi Anatoly, > > > > By default w/o specifying --iova-mode option is iova-mode=pa by default ? > > > > Thanks > > Venu > > > > In 18.11, there is a very specific set of circumstances that will > default to IOVA as VA mode. Future releases have become more aggressive, > to the point of IOVA as VA mode being the default unless asked > otherwise. So yes, it is highly likely that in your case, IOVA as PA is > picked as the default. > > -- > Thanks, > Anatoly >