Ubuntu Performance Tips

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  1. Check I/O activity: Whether you’re referred to as a security paranoid or a someone whose disk LED never goes off, iotop command can help. It displays top processes reading or writing to disk.

sudo iotop

  1. Check why boot is slow: systemd-analyze blame displays a list of processes to be “blamed” for slow boot. Also try bootchart

sudo systemd-analyze blame

  1. See what’s crashing: Annoyed of seeing “System program problem detected” popus, check /var/crash/ directory. You can remove its contents if you don’t want to dig into the issues nor want to report them.

ls /var/crash/

  1. Fasten shutdown: When shutting down the OS gives 90 seconds by default for the apps to quit, this seems to be too high! Uncomment and edit DefaultTimeoutStopSec to 30 seconds in /etc/systemd/system.conf file.

sudo nano /etc/systemd/system.conf

  1. Check scheduled jobs: See contents of /etc/cron.* to check what is running daily, weekly, or monthly. Carefully remove unwanted crons!

ls /etc/cron.\*

Happy tweaking! Don’t forget to share your tips below in comments section!