SSD tweaks in Linux

[Ub1476]

SSD starts to pop up all over now, so I devoted this thread to share/gather some information on how to improve your Linux/Ubuntu system for SSD. Also reccomend that you tell which laptop those tips and tricks works good with (if there's any difference).

I'll write down some tips/headline (detailed instructions in link) which I found on Geek Sheet, zdnet blog:


If your system motherboard uses a disk caching bus, change the BIOS setting from “Write Through” to “Write Back”.

Use the “noop” I/O scheduler.

Change the file system mount options on SSDs to “noatime”.

Ditch the journal and RAID your SSDs.


Source (http://blogs.zdnet.com/perlow/?p=9190)

I'm personally not sure about EXT2 (no journal) and EXT3 (journal). I read that some people get serious performance issues with EXT2 and therefore use EXT3 even though it writes more to disk.

Please share more information, tips and tricks. :)

[insane_alien]

i would still use a journalled filesystem. they can prevent a lot of things going wrong.

however, there are different levels of journalling. going for the one the write less to disk would probably be a good idea.

[Ub1476]

however, there are different levels of journalling. going for the one the write less to disk would probably be a good idea.

So how do you do that?

[youngalfred]

there are numerous tweaks to make a journaling file system write less. alot of them can be found at http://www.ubuntu-eee.com/index.php5?title=Main_Page
some include the dirty writeback tweak and less swappyness. I myself use reiserfs on my eee because of some reason i cant remember :p