Re: Optimization tips for SSDs ?

["Aaron J. Grier" <agrier%poofygoof.com@localhost>]

On Mon, Nov 08, 2010 at 06:44:16PM +0100, Grégoire Sutre wrote:
> I would like to install NetBSD -current on a recent laptop that comes
> with an SSD drive.  I'm a bit concerned about wear and degradation of
> write performance (especially since TRIM is not supported yet -
> afaik).  Various resources recommend to
> 
> - align partitions on at least 128KiB boundaries (some OSes use 1MiB
>   boundaries).
> 
> - mount(8) partitions with options noatime and nodevmtime.
> 
> - use memory filesystems for /tmp and /var/tmp.
> 
> - limit swap use.
> 
> 
> Do you have other recommendations?  For instance, should I use specific
> newfs(8) options?

well-engineered SSD will support full speed random access for years
before wearing out.  http://www.anandtech.com/show/2614/4 .

increased block size (newfs -b) might help write amplification?

-- 
  Aaron J. Grier | "Not your ordinary poofy goof." | 
agrier%poofygoof.com@localhost