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Ubuntu: Optimize for speed

21 Apr 2013

This easy little guide will help you with simple optimization tips for speeding up Ubuntu (12.04, 12.10, and 13.04) and other Ubuntu-based systems such as Linux Mint. The tips come in very handy for those using older computers with low RAM who need to boost their computer for better speed and performance and if you are just want a really fast and snappy computer on some regular hardware.

Removing Ubuntu One client

Saves >100 MB ram.

The following steps can be followed to completely remove the Ubuntu One client software.

killall ubuntuone-login ubuntuone-preferences ubuntuone-syncdaemon
sudo rm -rf ~/.local/share/ubuntuone
rm -rf ~/.cache/ubuntuone
rm -rf ~/.config/ubuntuone
rm ~/Ubuntu\ One
sudo apt-get purge ubuntuone-client python-ubuntuone-storage*

Remove unused Unity lenses

sudo apt-get purge \
unity-lens-friends \
unity-lens-music \
unity-lens-photos \
unity-lens-shopping \
unity-lens-video \
unity-lens-radios

Optimize mount options

Ubuntu use the relatime flag for updating file metadata when files are accessed. All these updates involve writes to the disk. We can avoid this with the noatime and nodiratime parameters. This means that access time to files and directories won't be tracked at all.

Use tmpfs for /tmp and /var etc.

Add a section like this tmpfs section to /etc/fstab

Move browser cache to tmpfs

rm -rf ~/.cache/google-chrome
ln -s /tmp ~/.cache/google-chrome

Move browser profile to memory using Profile-sync-daemon

Profile-sync-daemon (psd) is a diminutive pseudo-daemon designed to manage your browser's profile in tmpfs and to periodically sync it back to your physical disc (HDD/SSD). This is accomplished via a symlinking step and an innovative use of rsync to maintain back-up and synchronization between the two. One of the major design goals of psd is a completely transparent user experience.

Running this daemon is beneficial for two reasons: * Reduced wear to physical discs * Speed

sudo add-apt-repository ppa:graysky/utils
sudo apt-get update
sudo apt-get install profile-sync-daemon

Adjust /etc/psd.conf to match your setup and then restart the Profile-sync-daemon. Your browser(s) needs to be closed before restart of the Profile-sync-daemon.

sudo /etc/init.d/psd restart

Remove orphaned libraries

Over time most Ubuntu/Debian installations acquire packages which are no longer required - they've just been pulled in to satisfy dependencies of software you've since removed - deborphan package is probably the simplest way to get rid of orphaned and unused packages.

sudo apt-get install deborphan
sudo apt-get remove --purge `deborphan`; sudo apt-get autoremove

Clean browsers cache etc and vacuum browser databases.

sudo apt-get install bleachbit
bleachbit -c `bleachbit -l | grep cache`
bleachbit -c `bleachbit -l | grep tmp`
bleachbit -c `bleachbit -l | grep vacuum`

Clean rotated log files

sudo bleachbit -c system.rotated_logs

Clean temp and backup files

First do a dry-run and check that everything is good to go. bleachbit -p deepscan.*

and then do the real one bleachbit -c deepscan.*

Disable unnecessary services and applications

Use BUM, which is a runlevel configuration tool with GUI that allows Ubuntu users to edit and configure init services that are started when the system is booting up or restarting. With this tool, you will be displayed with all running and disabled services in which you can turn them on/off.

sudo apt-get install bum
sudo bum

To remove applications from startup go to Dash > and type Startup Applications.

Disable automatic startup of any services that are not needed (or even remove the package completely).

Increases performance using zRam

zRam is a module of the Linux kernel. It was previously called “compcache”. zRam increases performance by avoiding paging on disk and instead uses a compressed block device in RAM in which paging takes place until it is necessary to use the swap space on the hard disk drive. Since using RAM is faster than using disks, zRam allows Linux to make more use of RAM when swapping/paging is required, especially on older computers with less RAM installed.

FYI: Google uses zRAM for Chrome OS

Enable zRam on Ubuntu:

sudo apt-get install zram-config

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