Poor performance of ExtremePro 240GB

SSD (Solid State Drives) SanDisk Extreme Pro® SSD
7

To get TRIM working I did this

  • make sure the BIOS is using AHCI and not IDE for the disks. You can tell it is by:

dmesg | grep AHCI

  • use the Ext4 file system. This supports TRIM.

To see if trim is supported on the drive do this:

hdparm -I /dev/sde

(where /dev/sde is the drive).

That should say “Data Set Management TRIM supported” somewhere.

  • make sure you add “discard” to the options for the mount points in /etc/fstab