From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) by kanga.kvack.org (Postfix) with ESMTP id 2F1E96B0005 for ; Tue, 13 Nov 2018 01:44:49 -0500 (EST) Received: by mail-pf1-f198.google.com with SMTP id 68so3762315pfr.6 for ; Mon, 12 Nov 2018 22:44:49 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id 1-v6si20837407plv.205.2018.11.12.22.44.47 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 12 Nov 2018 22:44:48 -0800 (PST) Date: Mon, 12 Nov 2018 22:44:44 -0800 From: Matthew Wilcox Subject: Re: [PATCH v4 0/9] mpt3sas and dmapool scalability Message-ID: <20181113064444.GU21824@bombadil.infradead.org> References: <88395080-efc1-4e7b-f813-bb90c86d0745@cybernetics.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <88395080-efc1-4e7b-f813-bb90c86d0745@cybernetics.com> Sender: owner-linux-mm@kvack.org List-ID: To: Tony Battersby Cc: Christoph Hellwig , Marek Szyprowski , "iommu@lists.linux-foundation.org" , linux-mm@kvack.org, "linux-scsi@vger.kernel.org" On Mon, Nov 12, 2018 at 10:40:57AM -0500, Tony Battersby wrote: > I posted v3 on August 7. Nobody acked or merged the patches, and then > I got too busy with other stuff to repost until now. Thanks for resending. They were in my pile of things to look at, but that's an ever-growing pile. > I believe these patches are ready for merging. I agree. > cat /sys/devices/pci0000:80/0000:80:07.0/0000:85:00.0/pools > (manually cleaned up column alignment) > poolinfo - 0.1 > reply_post_free_array pool 1 21 192 1 > reply_free pool 1 1 41728 1 > reply pool 1 1 1335296 1 > sense pool 1 1 970272 1 > chain pool 373959 386048 128 12064 > reply_post_free pool 12 12 166528 12 That reply pool ... 1 object of 1.3MB? That's a lot of strain to put on the page allocator. I wonder if anything can be done about that. (I'm equally non-thrilled about the sense pool, the reply_post_free pool and the reply_free pool, but they seem a little less stressful than the reply pool)