Hi FB,  While many of us have put Clear Linux on laptops, this has often been as temporary solutions where the laptops have been sitting on the network and not really used as mobile devices. Mobile users and laptop use-cases are not really where we are aiming at. Ikey Doherty might be able to offer more details – he did most of the engineering for our desktop environment, but I don’t know if he focused on the mobile-user use-case at all.  Having recently done some Linux laptop tuning, I personally found the Arch Linux documentation pretty helpful. They have a page on SSD tuning considerations there too, and do address I/O scheduling and mount-option considerations as well. When it comes to the tuning considerations below, whatever’s true for Arch or another distro would likely be true for Clear. -Rob On 5/10/16, 10:41 AM, "Dev on behalf of fb.dev.clx" <dev-bounces(a)list s.clearlinux.org on behalf of fb.dev.clx(a)gmail.com> wrote: > > Hi all, > > As I would like to use Clear Linux as my main system on a laptop > with 2 > SSDs, I was wondering what should be prefered to improve the > performance and life span of these SSDs in terms of: > > - partition scheme (dedicated partition for virtual disk images?) > - partitions alignment > - filesystem (EXT4, XFS, etc.) > - automatic trimming method > - mount options (noatime, etc.) > - I/O scheduler > - swappiness setting > - others? > > > Also, is there a Clear Linux way to set all of this settings? > > Regards, > > -- FB > _______________________________________________ > Dev mailing list > Dev(a)lists.clearlinux.org > https://lists.clearlinux.org/mailman/listinfo/dev

On 5/13/2016 6:24 PM, fb.dev.clx wrote: you can just create these as you would otherwise, and they will be used. they're yours exclusively; the OS will not mix its own settings with yours (but yours will win in case of overlap)

Systemd mounts certain file systems automatically based on gid tags on the partition (e.g. /home) - /usr/lib/systemd is where to start digging.  -Rob > > On May 13, 2016, at 6:49 PM, fb.dev.clx <fb.dev.clx(a)gmail.com> > wrote: > > Thank you Arjan. Could you please tell me where are located the > system's ones which can serve as a basis? > > -- FB > > > > > On Fri, 2016-05-13 at 18:39 -0700, Arjan van de Ven wrote: > > > > > > On 5/13/2016 6:24 PM, fb.dev.clx wrote: > > > > > > Hi Robert, > > > > > > Thank you for your answer! The truth is that there is no > > > `/etc/fstab` > > > nor there is `/etc/sysctl.conf` for example, which is very > > > specific > > > to > > > Clear Linux and I'm a little bit lost with this. > > you can just create these as you would otherwise, and they will > > be > > used. > > they're yours exclusively; the OS will not mix its own settings > > with > > yours > > (but yours will win in case of overlap) > > > > > >

On 5/13/2016 6:49 PM, fb.dev.clx wrote: most of our default files are in /usr/share/defaults/* but fstab is .. special.

On 5/15/2016 8:08 AM, fb.dev.clx wrote: btw the io scheduler is a runtime tunable..... but we spent a bunch of time measuring things, and we ended up with our defaults based on data on SSDs.... do you have any data to suggest that other tunings are better? (we're always open to suggestions ;-) )