How to optimize a solid state drive - Revision history

Scott: /* TRIM support */

2015-05-29T16:13:00Z

TRIM support

← Older revision		Revision as of 16:13, 29 May 2015
Line 24:		Line 24:
	== TRIM support ==		== TRIM support ==
	TRIM is executed weekly by <code>/etc/cron.weekly/fstrim</code>		TRIM is executed weekly by <code>/etc/cron.weekly/fstrim</code>

			You can also test manually with
			<pre>
			root@gpu:~# fstrim -v /
			/: 194551808 bytes were trimmed
			</pre>

	== OLD: Updates to /etc/fstab ==		== OLD: Updates to /etc/fstab ==

Scott: /* Updates to /etc/fstab */

2015-05-29T16:07:24Z

Updates to /etc/fstab

← Older revision		Revision as of 16:07, 29 May 2015
Line 22:		Line 22:
	</pre>		</pre>

	== Updates to /etc/fstab ==		== TRIM support ==
			TRIM is executed weekly by <code>/etc/cron.weekly/fstrim</code>

			== OLD: Updates to /etc/fstab ==
	* Activate TRIM by adding a "discard" option to the SSD file system mount line. Also add "noatime" for efficiency:		* Activate TRIM by adding a "discard" option to the SSD file system mount line. Also add "noatime" for efficiency:
	<pre>		<pre>

Scott: Created page with ' == Important background == The SSD Anthology: http://www.anandtech.com/show/2738 == Wiping the drive == https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase http://www.anand…'

2011-02-02T23:16:59Z

Created page with ' == Important background == The SSD Anthology: http://www.anandtech.com/show/2738 == Wiping the drive == https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase http://www.anand…'

New page

== Important background ==
The SSD Anthology: http://www.anandtech.com/show/2738

== Wiping the drive ==
https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase

http://www.anandtech.com/show/2738/11

You should do a complete drive erase whenever you rebuild the OS.

== Rebuilding the partitions ==
Don't put a swap partition on the SSD. You also want to worry about "alignment" of partitions. I avoided this issue by filling the entire drive with a single partition.

== Kernel support ==
To get TRIM support in Linux, you need the 2.6.33 kernel or better. To get this working in Lucid (2.6.32):
<pre>
sudo add-apt-repository ppa:kernel-ppa/ppa
sudo apt-get update
sudo apt-get install linux-headers-2.6.36-1 linux-headers-2.6.36-1-generic
sudo apt-get install linux-image-2.6.36-1-generic
</pre>

== Updates to /etc/fstab ==
* Activate TRIM by adding a "discard" option to the SSD file system mount line. Also add "noatime" for efficiency:
<pre>
UUID=7b019be8-1708-40a1-b811-4fd138246dab / ext4 errors=remount-ro,noatime,nodiratime,discard 0 1
</pre>

* Mount /tmp directly in RAM:
<pre>
tmpfs /tmp tmpfs noexec,defaults,noatime 0 0
</pre>