On Feb 7, 2014, at 5:11 PM, Michael Cronenworth <mike@xxxxxxxxxx> wrote: > On 02/07/2014 03:00 AM, sam tygier wrote: >> >> Ubuntu will be using a cronjob that calls fstrim, not the discard mount option. >> They found that the discard option cause a small performance hit. >> https://blueprints.launchpad.net/ubuntu/+spec/core-1311-ssd-trimming > > If you read the link you posted you will find that their discard testing is inconclusive. They only tested 2 SSDs. > > The whole discard vs. fstrim debate is entirely speculation. I haven't seen any fs maintainer speak up on either side either. The debate has been limited to blog posters and vocal end-users with their opinions. Well it's an old topic for them, you have to go back 3+ years, which is maybe not what you expect when only in the last few months some loud mouths on /. and Engadget shriek ZOMG Linux just now is getting TRIM?! And how basic this is on Windows and OS X (despite OS X only enabling trim for Apple branded SSDs). Theodore T'so has spoken up on the ext4 list, as have others: http://www.spinics.net/lists/linux-ext4/msg13071.html Dave Chinner has said some things about it on the XFS list, as have others: http://oss.sgi.com/archives/xfs/2013-07/msg00922.html http://oss.sgi.com/archives/xfs/2011-05/msg00338.html And there's a pile of discard/trim conversations on LKML, LVM, Btrfs, on and on. Chris Murphy -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
