From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 7380E37A0 for ; Thu, 30 Mar 2017 11:31:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=intel.com; i=@intel.com; q=dns/txt; s=intel; t=1490866273; x=1522402273; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=/2QrsEs4Huewg/75wVqoMExPsDuqEf1wBK1c55ygWfA=; b=qXdrMN8f49HuVaKEnBazwkzIIjL0p9nMCSakN9hSNegt/PmGPs9uxDvo Zti5/WjyZtgVQ4FnkniM7J5EFKZy6w==; Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Mar 2017 02:31:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.36,246,1486454400"; d="scan'208";a="241971073" Received: from bricha3-mobl3.ger.corp.intel.com ([10.237.221.140]) by fmsmga004.fm.intel.com with SMTP; 30 Mar 2017 02:31:09 -0700 Received: by (sSMTP sendmail emulation); Thu, 30 Mar 2017 10:31:09 +0100 Date: Thu, 30 Mar 2017 10:31:08 +0100 From: Bruce Richardson To: Olivier Matz 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: <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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170329200923.GA11516@bricha3-MOBL3.ger.corp.intel.com> Organization: Intel Research and =?iso-8859-1?Q?De=ACvel?= =?iso-8859-1?Q?opment?= Ireland Ltd. User-Agent: Mutt/1.8.0 (2017-02-23) 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 09:31:13 -0000 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? /Bruce