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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB27EC433F5 for ; Thu, 2 Dec 2021 07:14:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355791AbhLBHRb (ORCPT ); Thu, 2 Dec 2021 02:17:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355776AbhLBHRb (ORCPT ); Thu, 2 Dec 2021 02:17:31 -0500 X-Greylist: delayed 160439 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 01 Dec 2021 23:14:09 PST Received: from gentwo.de (gentwo.de [IPv6:2a02:c206:2048:5042::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACC6AC061574 for ; Wed, 1 Dec 2021 23:14:09 -0800 (PST) Received: by gentwo.de (Postfix, from userid 1001) id D0862B004DB; Thu, 2 Dec 2021 08:14:06 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by gentwo.de (Postfix) with ESMTP id CDA14B00072; Thu, 2 Dec 2021 08:14:06 +0100 (CET) Date: Thu, 2 Dec 2021 08:14:06 +0100 (CET) From: Christoph Lameter X-X-Sender: cl@gentwo.de To: Bob Pearson cc: Jason Gunthorpe , zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org Subject: Re: [PATCH for-next v4 09/13] RDMA/rxe: Replaced keyed rxe objects by indexed objects In-Reply-To: Message-ID: References: <20211103050241.61293-1-rpearsonhpe@gmail.com> <20211103050241.61293-10-rpearsonhpe@gmail.com> <20211119174115.GB2988708@nvidia.com> User-Agent: Alpine 2.22 (DEB 394 2020-01-19) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Hi Bob, good to hear from you On Tue, 30 Nov 2021, Bob Pearson wrote: > Multicast is not an important use case for RoCE since plain IP is a better solution. Multicast is an important use case for ROCE especially in the area of finance and there is commercial middleware that depends on it. Plain IP suffers from the high kernel overhead. High packet rates are only possible through the RDMA apis. Greetings, Christoph