From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D2D3606A31C for ; Wed, 28 Oct 2026 15:15:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=usWhDD+9; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=WRcreA69 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=k+Fp/OwTzx46JAuGLMEAEXDppUMAlCveEqpA/Wat0tI=; b=usWhDD+9DUoEAlD8rP9HDuU2wX AITfG6bOg9LuHmPeCdDJlN1If5o9r63VZzMOE5Qe1l8vDAhSGH+MdKmU4CmbHjM527H7pgqw91GHg 57jIAspc2WktRWu6hy7Ped1BnlcYablXg00bOEkjEX2I31Q+n1lZ5bwABabZUgqPDgJJYF+I1wxau Zk1YeA3BD+4Z2sN1JC/qd1R1paxes6/i3MimVyOQZfzR9YFIodruO2vAfd2z9g5E1jailT21K+V5Q E61Ev13wo5r96SUBeQyFV3ImmsE387hDxLOUQlp4mKNZ6rZTTvW+//DpJJoq7wCV/H52557Wp3SSk xJBnMdnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xM5Mw-00000007Jr6-2HTX; Wed, 28 Oct 2026 15:15:14 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xM5Mw-00000007Jqy-0f91 for linux-nvme@lists.infradead.org; Wed, 28 Oct 2026 15:15:14 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 5A7414009C; Wed, 28 Oct 2026 15:15:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F15321F01825; Wed, 28 Oct 2026 15:15:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793200513; bh=k+Fp/OwTzx46JAuGLMEAEXDppUMAlCveEqpA/Wat0tI=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=WRcreA69M7B6WlrKXcfPu2ir2tg4ZREnbq+/kwGIkfG9ufiIDD0pqsLDo5ZwmGO4a xmw+fveC27GyQe+vNrnIGMJGZ21L+mnYtKB/0lGkcbZm5QVUaYWm6+CJyLWyto5zh6 HEOZ6dSJt7cPhEhlSBSAD7Xrasod2f7PwHh4eIoZD0uqfYneXnQctimVih52OTD2IC KhPldbarVr0SKDknGHB6wQD97XVUH9zzi5dNW5LlzxkOrtcdM7C4KkfhNQIhiVTd7S Mx2uLEPiUt+gCeHvatvKITCkoLiOiIhBX7o+ldeGhmF24vmZw+iMKLJUgYVdwblzNw g+navrRppGaEQ== Date: Wed, 28 Oct 2026 09:15:11 -0600 From: Keith Busch To: Christoph Hellwig Cc: Fengnan , Keith Busch , linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org, tglx@kernel.org, namjain@linux.microsoft.com Subject: Re: [RFC PATCH 0/3] nvme-pci: dynamic interrupt moderation Message-ID: References: <20261013223543.395054-1-kbusch@meta.com> <16e8bc03-42c2-4bc8-bce9-dab49aad66b8@bytedance.com> <20261028150712.GA16374@lst.de> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20261028150712.GA16374@lst.de> X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" X-Spam-Status: No, score=-5.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Wed, Oct 28, 2026 at 04:07:12PM +0100, Christoph Hellwig wrote: > On Thu, Oct 22, 2026 at 05:43:54PM +0800, Fengnan wrote: > > Hi Keith: > > > > I made some modifications to DIM and then implemented a solution > > using the DIM framework. > > Based on current testing, the results are now comparable to those of > > the previous patch. > > Here are the preliminary test results: > > https://docs.google.com/spreadsheets/d/1e8LQPnaDhmv50XlAM3XxI0TMQkhbk0bTZwlJP1Hzzdk/edit?gid=188992110#gid=188992110 > > > > If you agree with this approach, I’ll continue testing and optimizing. > > І can't speak for Keith, but I'd really love to see this going forward! Same! This is a great problem to solve, but I'm just sorry I don't have more cycles to work on the cause. I can quickly respin the msix noflush pre-patches to address the naming issues tglx mentioned, and we can take nvme in whichever direction has the best performance.