From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 276B8C3815B for ; Wed, 15 Apr 2020 12:52:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 11ADA206D5 for ; Wed, 15 Apr 2020 12:52:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S370526AbgDOMwQ (ORCPT ); Wed, 15 Apr 2020 08:52:16 -0400 Received: from stargate.chelsio.com ([12.32.117.8]:10881 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S370522AbgDOMwP (ORCPT ); Wed, 15 Apr 2020 08:52:15 -0400 Received: from localhost (pvp1.blr.asicdesigners.com [10.193.80.26]) by stargate.chelsio.com (8.13.8/8.13.8) with ESMTP id 03FCq5Qk006916; Wed, 15 Apr 2020 05:52:06 -0700 Date: Wed, 15 Apr 2020 18:22:05 +0530 From: Krishnamraju Eraparaju To: Bernard Metzler Cc: faisal.latif@intel.com, shiraz.saleem@intel.com, mkalderon@marvell.com, aelior@marvell.com, dledford@redhat.com, jgg@ziepe.ca, linux-rdma@vger.kernel.org, bharat@chelsio.com, nirranjan@chelsio.com Subject: Re: [RFC PATCH] RDMA/siw: Experimental e2e negotiation of GSO usage. Message-ID: <20200415125203.GA8720@chelsio.com> References: <20200415105135.GA8246@chelsio.com> <20200414144822.2365-1-bmt@zurich.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Wednesday, April 04/15/20, 2020 at 11:59:21 +0000, Bernard Metzler wrote: > >At present, Chelsio T6 adapter could understand upto 16KB large FPDU > >size, max. > > > That's interesting and would already better the performance for > siw <-> hardware iwarp substantially I guess. Did you try that? Yes I see almost 3x perfromace gain when GSO is enabled. That is, on a siw<->T6 setup, with 1500 MTU size: GSO disabled: ~25Gbps GSO enabled: ~72Gbps