From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f173.google.com (mail-wr0-f173.google.com [209.85.128.173]) by dpdk.org (Postfix) with ESMTP id 8366F10F62 for ; Thu, 30 Mar 2017 14:02:40 +0200 (CEST) Received: by mail-wr0-f173.google.com with SMTP id w11so56448431wrc.3 for ; Thu, 30 Mar 2017 05:02:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=D86IPmzF48Yj8bkr599EJFKelR6sde7LefMdvIF8fXY=; b=tP4jSq0Dp8bT+cI2Hw44Jw0TgDmgEHTBx9jsjGLszl/BKIliWQp3jQb3VPYpfHPq65 X9vnJfW70UBJCJCfuZ6nynlCq3PRoe4zJahp6QayA5G2wPB/bF8Ubqm+42JTWTch+PLt e2kLWI6HF2tAGeTHd/KBn4MhMkY9W2uLVYhm9kFwe60x6W717FBaypvkdHaGMwJZpADn hjFPyjrV9Cr5/Q3jefijpMvgJcI9ZeAyJarf9CNPIFcEvp5RTCo9DvShG3+YdiKX7pdP rJ99O13zmxqFCEb5NCULjdLucQ6TZyhFIcxpYFjIC/HuoQ2g+kAeM2cUmLcYgbAPw3vz B/9Q== 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=D86IPmzF48Yj8bkr599EJFKelR6sde7LefMdvIF8fXY=; b=Oeo6QzBPxKYqvmD1fVHo8LTJNWHyKVWY3gkf8lhPb/ribqzBu3bvKnPmGQKf7Z6Gxw 7WRLvEPJ5dn7Vj87JqjKRWFyNkqZh3HvSjL8C8WFpiRqJf98V/BZI5IK43lZWpv+NGlD PYBQt1lMkL/3IjWO86VW2LKOzMMq8bwq8PFrVhDuYVUzJ6wEDIK4deYqQPNMuXMyYDkw Fm+J4tIx5vCvyQeYWAfyFlHSlw8xzBRBXXKbaehc/3upYL7ovPxeCVNzm3tTAaVVzSJX 7X7s9NrzEkCIPJhjrmvBAv7EFzwDCIb2+2he/YAEbqkhsuAS6mBAK62WUTjkZx0AvsfG f4vA== X-Gm-Message-State: AFeK/H1HIP6ScFcMnzJ1mf+tj/GK6vs4XTyHl70r4n1pbCtjU+W9gYQ2Fbv2YsxPywGUK7VN X-Received: by 10.28.30.197 with SMTP id e188mr2922998wme.99.1490875359948; Thu, 30 Mar 2017 05:02:39 -0700 (PDT) Received: from platinum (2a01cb0c03c651000226b0fffeed02fc.ipv6.abo.wanadoo.fr. [2a01:cb0c:3c6:5100:226:b0ff:feed:2fc]) by smtp.gmail.com with ESMTPSA id h187sm12047176wma.32.2017.03.30.05.02.39 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 30 Mar 2017 05:02:39 -0700 (PDT) Date: Thu, 30 Mar 2017 14:02:36 +0200 From: Olivier Matz To: Bruce Richardson Cc: dev@dpdk.org, konstantin.ananyev@intel.com, mb@smartsharesystems.com, andrey.chilikin@intel.com, jblunck@infradead.org, nelio.laranjeiro@6wind.com, arybchenko@solarflare.com Message-ID: <20170330140236.0d2ebac8@platinum> In-Reply-To: <20170330093108.GA10652@bricha3-MOBL3.ger.corp.intel.com> References: <1485271173-13408-1-git-send-email-olivier.matz@6wind.com> <1488966121-22853-1-git-send-email-olivier.matz@6wind.com> <20170329175629.68810924@platinum> <20170329200923.GA11516@bricha3-MOBL3.ger.corp.intel.com> <20170330093108.GA10652@bricha3-MOBL3.ger.corp.intel.com> X-Mailer: Claws Mail 3.14.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH 0/9] mbuf: structure reorganization 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: , X-List-Received-Date: Thu, 30 Mar 2017 12:02:40 -0000 On Thu, 30 Mar 2017 10:31:08 +0100, Bruce Richardson wrote: > On Wed, Mar 29, 2017 at 09:09:23PM +0100, Bruce Richardson wrote: > > On Wed, Mar 29, 2017 at 05:56:29PM +0200, Olivier Matz wrote: > > > Hi, > > > > > > Does anyone have any other comment on this series? > > > Can it be applied? > > > > > > > > > Thanks, > > > Olivier > > > > > > > I assume all driver maintainers have done performance analysis to check > > for regressions. Perhaps they can confirm this is the case. > > > > /Bruce > > > > In the absence, of anyone else reporting performance numbers with this > patchset, I ran a single-thread testpmd test using 2 x 40G ports (i40e) > driver. With RX & TX descriptor ring sizes of 512 or above, I'm seeing a > fairly noticable performance drop. I still need to dig in more, e.g. do > an RFC2544 zero-loss test, and also bisect the patchset to see what > parts may be causing the problem. > > Has anyone else tried any other drivers or systems to see what the perf > impact of this set may be? I did, of course. I didn't see any noticeable performance drop on ixgbe (4 NICs, one port per NIC, 1 core). I can replay the test with current version. Olivier