Ubuntu: How to reduce Memory usage

How to optimize Ubuntu by reducing memory usage?

Step 1: Get rid of memory consuming processes:

Some processes that may be killed to reduce memory usage:

• killall gnome-power-manager
• sudo killall cupsd
• killall top
• killall cron
• killall gnome-screensaver
• killall gnome-system-monitor

Step 2: Tweak. Use simplest wallpaper, theme, window manager and lightweight programs.. In most cases the fastest theme or icon has the smallest size!


Step 3:

• Disable the logging background services.
• Disable the update manager.
• Disable at service.
• Disable audio settings.
• If you don't want to login via a nice graphic screen, disable the "Graphical login manager".
• Disable cupsys if you don't intend to print.
• Disable hard disk tuning (it's an SSD!)
• Reduce tty terminals to 2 or something.
• Prevent unused modules from loading by blacklisting them.
• Disable any fancy themes (esp using compiz).
• Use only minimal buttons/launchers on one panel only (remove second panel if you have one).
• Battery monitor takes a few cpu cycles (I've often seen it roaming the top 5 on a '$ top' output.)

Step 4: Optimize Web-browser

• Useful plugins for Firefox like Flashblock and Adblock-plus (can block selected images) to make websites lighter
• Use lightweight web-browser like Midori

 Step 5: Compile applications from source (advanced)