From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:60602 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728267AbfBBQHR (ORCPT ); Sat, 2 Feb 2019 11:07:17 -0500 Date: Sat, 2 Feb 2019 08:07:15 -0800 From: Christoph Hellwig Subject: Re: [PATCH 8/8] xfs: cache unlinked pointers in an rhashtable Message-ID: <20190202160714.GA12145@infradead.org> References: <154897667054.26065.13164381203002725289.stgit@magnolia> <154897672012.26065.1375987197453969157.stgit@magnolia> <20190201080343.GD22295@infradead.org> <20190201235900.GX6173@dastard> <20190202043159.GN5761@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190202043159.GN5761@magnolia> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: "Darrick J. Wong" Cc: Dave Chinner , Christoph Hellwig , linux-xfs@vger.kernel.org On Fri, Feb 01, 2019 at 08:31:59PM -0800, Darrick J. Wong wrote: > > I wrote a silly program to open as many O_TMPFILE files as it can and > then close them all. I wrapped that in a script to crank up ulimit -n > to fs.file_max (which on this VM was about 194000 files) and came up > with this on a 5.0-rc4 kernel with deferred inactivation and iunlink > backref caching: Ah, cool. Maybe throw a one-line summary of the results into the commit log for the next version.