Re: [gentoo-user] Optimizations for SSD netbook

[Florian Philipp <lists@f_philipp.fastmail.net>]

Grant schrieb:
> My girlfriend is at her wit's end with her SSD netbook and is now
> hogging my laptop.  Her netbook has 1GB RAM that could be upgraded to
> 1.5GB, but I've read that it's a pain.  It already runs xfce4, and
> I've just made these optimizations based on past discussions:
> 
> 1. CFLAGS="-march=prescott -0s -pipe -fomit-frame-pointer -ssse3"
> 2. added elevator=noop as a boot parameter

I remember that I've given this second advice. Since then I've read in
the German computer journal c't [1] that CFQ has a detection for SSDs
since 2.6.28 and now is the best choice for these devices.

> 3. disabled DRI to save 32MB RAM
> 4. removed the swap partition from /etc/fstab
> 
> Am I missing anything significant?  I've read that it's good to set up
> /tmp in RAM.  How can I do that? In /etc/fstab I have:
> 
> shm /dev/shm tmpfs nodev,nosuid,noexec
> 
> Is that related?
> 

Yup, the entry should read:
tmp /tmp tmpfs default 0 0

The first entry is just a name. You can name it in every way you want it.

For further tweaks: Do you use Firefox? I've read that it uses fsync()
when writing to its sqlite backend. This is a really good thing because
it reduces the risk of loosing data but you might (and can) disable this
to increase performance and reduce wear. I don't have a link at hand but
it shouldn't be to hard to find.

[1]c't 11/2009 page 101