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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 43DBDC433E0 for ; Wed, 1 Jul 2020 05:36:23 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 067B620722 for ; Wed, 1 Jul 2020 05:36:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kq9uaKn3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 067B620722 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PRBW9E+4qntP3z+SveVV3Ws9JjR8EGz6nDRwFqgyNxI=; b=kq9uaKn397b8NUTNNO3kwaKxZ yVJLLJSKRdwVkIhPic22gMQCtI4RziwllrtV3C1lx0jizwP0QADEXU8zPNBzf1RpvI3sQXWkeoVK1 Ez6MRf91bTnkZxDFIQunWOgXw4m9IpZNWsINPLJtrz6rlDKU5etOFzqDEAIvuCBeoWAyyio5MLJvT rSxq5HAmDC4FdC56D6/6nPCXTQNf8UysvVm6HhsPhrebyJEs8zuZDCXltRc1y6+Ku8ebPPGMD57/T XNLx8FeqzbrCD3evIWVumCV2Duto3A/wjQIJgcxaGFGODeXi9kRjHP+toED4KQ18Emem6P3H0xvcs as4djuHCg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jqVPs-0007wl-Q9; Wed, 01 Jul 2020 05:36:16 +0000 Received: from verein.lst.de ([213.95.11.211]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jqVPo-0007wK-By for linux-nvme@lists.infradead.org; Wed, 01 Jul 2020 05:36:13 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id BE0CD68B02; Wed, 1 Jul 2020 07:36:09 +0200 (CEST) Date: Wed, 1 Jul 2020 07:36:09 +0200 From: Christoph Hellwig To: Chaitanya Kulkarni Subject: Re: [PATCH V2 0/2] nvme: replace linked list with xarray for ns tracking Message-ID: <20200701053609.GA28056@lst.de> References: <20200701022517.6738-1-chaitanya.kulkarni@wdc.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200701022517.6738-1-chaitanya.kulkarni@wdc.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200701_013612_545471_7F6DD9DD X-CRM114-Status: GOOD ( 10.22 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kbusch@kernel.org, hch@lst.de, linux-nvme@lists.infradead.org, sagi@grimberg.me Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Tue, Jun 30, 2020 at 07:25:15PM -0700, Chaitanya Kulkarni wrote: > Hi, > > This is a small patch-series which replaces ctrl->namespaces with > xarray for host-core and target-core. We can see following > performance improvement when running fio with 32 parallel jobs where > first 16 namespaces and last 16 namespaces are used for I/O. See [1] for > detailed performance numbers. Why would that make any difference given that we don't look up namespaces in the I/O path? _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme