Feature changed by: Matthias Eckermann (mge1512) Feature #305168, revision 15 Title: default to relatime openSUSE-11.1: Rejected by Stanislav Visnovsky (visnov) reject date: 2008-09-10 10:20:17 reject reason: This is too late for openSUSE 11.1. Postponing. Priority Requester: Mandatory openSUSE-11.2: Evaluation Priority Requester: Mandatory Requested by: Michael Meeks (michael_meeks) Description: At least for desktops, we should reduce the memory and I/O thrash caused by atime updates, by using relatime. Relations: - bugreport from community (novell/bugzilla/id: 398616) https://bugzilla.novell.com/show_bug.cgi?id=398616 - Offers 'noatime' when 'relatime' is clearly better (novell/bugzilla/id: 461829) https://bugzilla.novell.com/show_bug.cgi?id=461829 Discussion: #1: Robert Davies (robopensuse) (2009-01-16 15:52:09) Bug #461829 is not requesting breaking POSIX semantics by default! relatime should replace noatime option in the mount options part of partioner tool, especially now it has been improved to update atime on file access if it's older than 24 hours. Standards are important, and LRU file caches cannot be relied on if noatime usage is common, or if poor backup software touches atimes, when reading files. #2: Sven Burmeister (rabauke) (2009-01-23 01:09:47) 11.1 is out and 11.2 getting started. Did anyone hear of ubuntu suffering from using relatime by default? If not, it seems likely that there are little to none issues. #3: Stephan Kulow (coolo) (2009-05-08 16:51:21) Matthias, I would think the easiest solution is replacing the current checkbox "use noatime" with "use relatime" and make it default (possibly per product). atime is a major pain for many systems where powersave and co are affected. + #4: Matthias Eckermann (mge1512) (2009-05-11 15:52:11) (reply to #3) + I am not perfectly happy, as a system crash could invalide the "atime"s + with "relatime" switched on; looking for supporting information though, + it seems, the broader Linux community is in favour of "relatime" (with + remarkable exceptions); thus I propose: + * introduce "relatime" as an independend parameter + * keep the "noatime" checkbox in YaST + * make "relatime" default on SSDs automatically + * introduce a generic switch in YaST "defaultrelatime", which can be + switched on/off per product + * make "relatime" default "on" for the openSUSE product + Does that help? -- openSUSE Feature: https://features.opensuse.org/305168