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 E3F62C77B7A for ; Fri, 26 May 2023 03:26:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229625AbjEZD0C (ORCPT ); Thu, 25 May 2023 23:26:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229568AbjEZD0A (ORCPT ); Thu, 25 May 2023 23:26:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 498EDE6; Thu, 25 May 2023 20:26:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D846B6471F; Fri, 26 May 2023 03:25:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2F170C433EF; Fri, 26 May 2023 03:25:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1685071559; bh=BTIaAcxw6JMw/kBG+7/ytX8/qt2HopHJ9Nqlbp6SrPU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=eIztQ0pfSz7V7fBvUzeog84FT45VkAZ2Lae27wsJjMo2fG1neQr92ibbIFgGHsQ2d r4JJTPcmgjMJnT+uzL6zfSlfkfBY8dFo++z67mnF7wrr/9P/KiWD0ShmXwko8V+SIE zoqSY3IREiAbPn2Znwq2kn2tRNNV2Ly7FViIEibdDkP7RxB1FMhHu22yVTGyQYbsN2 OX4koaThdA9hIKe7/x64Ho3jdyINstDb+ujciIDpcmybpuL5c2X9JGIqtJNRCxc5Ni jKHY5EnBMTUPsHPsGt8BBA+PoBgarYho9GcKQlrbQUIpEZqkQSQWDIuFJen+j5HryZ CMMU/YZeGrRJQ== Date: Thu, 25 May 2023 20:25:57 -0700 From: Jakub Kicinski To: Haiyang Zhang Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, decui@microsoft.com, kys@microsoft.com, paulros@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com, davem@davemloft.net, wei.liu@kernel.org, edumazet@google.com, pabeni@redhat.com, leon@kernel.org, longli@microsoft.com, ssengar@linux.microsoft.com, linux-rdma@vger.kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, bpf@vger.kernel.org, ast@kernel.org, sharmaajay@microsoft.com, hawk@kernel.org, tglx@linutronix.de, shradhagupta@linux.microsoft.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH V2,net] net: mana: Fix perf regression: remove rx_cqes, tx_cqes counters Message-ID: <20230525202557.5a5f020b@kernel.org> In-Reply-To: <1685025990-14598-1-git-send-email-haiyangz@microsoft.com> References: <1685025990-14598-1-git-send-email-haiyangz@microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On Thu, 25 May 2023 07:46:30 -0700 Haiyang Zhang wrote: > lot caching and memory overhead, hence perf regression. Horatiu's ask for more details was perfectly reasonable. Provide more details to give the distros and users an idea of the order of magnitude of the problem. Example workload and relative perf hit, anything. Please do not repost within 24 hours: https://www.kernel.org/doc/html/next/process/maintainer-netdev.html -- pw-bot: cr