From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Sat, 9 Jul 2016 00:35:15 +0200 (CEST) From: Jiri Kosina To: ksummit-discuss@lists.linux-foundation.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: [Ksummit-discuss] [CORE TOPIC] How to cope with 'creative' userspace List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , There are many cases where certain components of modern linux desktops slightly misuse the features provided by the kernel. One of the latests instances was PIDs controller being instructed by an init system to actually limit the number of created sub-processess/threads to insanely small number https://github.com/systemd/systemd/blob/dd050decb6ad131ebdeabb71c4f9ecb4733269c0/NEWS#L60 That of course caused horrible user experience left and right. This is not a single and only exceptional instance of such issue. I know that this in principle shouldn't really be directly our business, but I believe we should be at least a bit nervous when our interfaces are being used "incorrectly". I dont' have a good idea from top of my head what we could immediately do to improve this. Some sort of documented guidance on sane values for certain userspace toggles? Issue a warning when we think userspace is trying to shoot itself in a foot? ...? Thanks, -- Jiri Kosina SUSE Labs