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 smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 50149CCA47A for ; Wed, 1 Jun 2022 17:57:59 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id E15FF4183D; Wed, 1 Jun 2022 17:57:58 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bKbd3-L7F-ng; Wed, 1 Jun 2022 17:57:57 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id 817B04182A; Wed, 1 Jun 2022 17:57:57 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 50A15C0039; Wed, 1 Jun 2022 17:57:57 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 650A4C002D for ; Wed, 1 Jun 2022 17:57:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 3E4A960784 for ; Wed, 1 Jun 2022 17:57:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jKlSdS6E1Eql for ; Wed, 1 Jun 2022 17:57:54 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp3.osuosl.org (Postfix) with ESMTPS id A5448606C0 for ; Wed, 1 Jun 2022 17:57:54 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id D34A568C4E; Wed, 1 Jun 2022 19:57:44 +0200 (CEST) Date: Wed, 1 Jun 2022 19:57:43 +0200 From: Christoph Hellwig To: Nathan Chancellor Subject: Re: [PATCH 09/15] swiotlb: make the swiotlb_init interface more useful Message-ID: <20220601175743.GA28082@lst.de> References: <20220404050559.132378-1-hch@lst.de> <20220404050559.132378-10-hch@lst.de> <20220601173441.GB27582@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: linux-hyperv@vger.kernel.org, x86@kernel.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, linux-riscv@lists.infradead.org, Christoph Hellwig , linux-s390@vger.kernel.org, Stefano Stabellini , Konrad Rzeszutek Wilk , tboot-devel@lists.sourceforge.net, xen-devel@lists.xenproject.org, David Woodhouse , Tom Lendacky , Anshuman Khandual , Boris Ostrovsky , linux-arm-kernel@lists.infradead.org, Juergen Gross , linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org, Robin Murphy X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Wed, Jun 01, 2022 at 10:46:54AM -0700, Nathan Chancellor wrote: > On Wed, Jun 01, 2022 at 07:34:41PM +0200, Christoph Hellwig wrote: > > Can you send me the full dmesg and the content of > > /sys/kernel/debug/swiotlb/io_tlb_nslabs for a good and a bad boot? > > Sure thing, they are attached! If there is anything else I can provide > or test, I am more than happy to do so. Nothing interesting. But the performance numbers almost look like swiotlb=force got ignored before (even if I can't explain why). Do you get a similar performance with the new kernel without swiotlb=force as the old one with that argument by any chance? _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu