March 20, 2011

The best filesystem for a (laptop) SSD?


I've recently purchased an SSD (OCZ Vertex 2, 40g, MLC) to be used in my laptop.
My laptop is used intensively, it's my typewriter at school and my plaything when I get home but it's still a laptop and as such it won't be seeing massive I/O and huge backups (I backup my notes and code daily/weekly, but that hardly counts).
Now I never really bothered with the filesystemtype, I used ext4 for everything as it's recommended most, but with my new SSD I want to do things right. (which may be Ext4)

What I find most important on my laptop is the boot time, battery life and the SSDs life. Stability is less of a concern for me because as I said it is also my plaything so I'm used to stuff breaking down.
After reading this I would say JFS is the best choice, it's generally a great performer and I heard it's also very power efficient.
However, I do still have a few questions on which I hope you could enlighten me:[ol][li]JFS is a journaled filesystem, and it's been said this significantly reduces the lifetime of an SSD: is this true? And if so, can you have JFS without journaling? this guy claims the effects are trivial but he uses SLCs in his calculations.[/li]
[li]Is the efficiency of JFS really noticable? (i.e. will I get some extra minutes out of my battery?)[/li]
[li]SSDs perform better when there's less data on the drive, so should I instead go for a compressed FS, do these boot faster (less data to load) or slower (decompressing)? and do these filesystems drain my battery?[/li][/ol] any input is appreciated.

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