[enhancement] Continious TRIM vs. periodic TRIM on SSD installation

[killajoe]

Problem:

Continious TRIM is default on SSD installation, should it not be periodic TRIM?

Steps To Reproduce:

1. installing Antergos onto SSD Drive
2. fstab is setup with the "discard" option andcontinious TRIM is enabled by this
3. Unfortunately, there are wide quality gaps of SSD's bios' to perform continuous TRIM.

References

• https://wiki.archlinux.org/index.php/Solid_State_Drives
• https://forums.freebsd.org/threads/56951/#post-328912
• https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/

Additional Notes:

Discussion on the forum:

https://forum.antergos.com/topic/6683/ssd-harddisk-continuous-trim-vs-periodic-trim https://forum.antergos.com/topic/7746/is-fstrim-really-working/29

[karasu]

These are Cnchi's defaults in sdd disks (yes, continuous trim):

If swap : defaults,discard If extfs, jfs or xfs : defaults,noatime,discard if btrfs: defaults,noatime,compress=lzo,ssd,discard,space_cache,autodefrag,inode_cache

Should we change to periodic TRIM by default?

[killajoe]

I would say yes to it, but needs some try because periodic TRIM needs a systemd service, and as i see here it can fail: https://forum.antergos.com/topic/7746/is-fstrim-really-working/31 Looks like it works if it is started by systemctl start fstrim.timer ones but fails if it is only enabled without starting the service....

[killajoe]

Periodic TRIM is in any case the better way to use TRIM on SSD drives, as it reduce the load and may also enhance the livetime..