Linux Load Average Explained | uptime, /proc/loadavg & Core Count Tutorial
Linux load average confused? This tutorial breaks down the three numbers from the uptime command, what they really mean, and how to interpret them for your CPU core count. Learn the difference between CPU-bound and I/O-bound load, then watch a hands-on Linux terminal demo where every command is run and verified step by step.
In this video you will learn:
• What the three load average numbers from `uptime` actually represent (1, 5, and 15 minute averages)
• How Linux measures load using runnable and uninterruptible processes
• CPU-bound vs I/O-bound load and why both raise the load number
• How to interpret load average relative to your core count (rule of thumb: equals cores = fully utilized)
• Reading `/proc/loadavg` directly for kernel-level load stats
• Using `nproc` to count available CPU cores
• Comparing two `uptime` readings to spot rising or falling load trends
• Finding the top CPU-consuming processes with `ps -eo pid,comm,%cpu --sort=-%cpu`
• When a "high" load average is normal vs when it indicates a real problem
Who this is for: developers, sysadmins, DevOps engineers, SREs, and IT students who want to confidently read and interpret Linux system load on production servers and local machines.
Lab commands demonstrated (each run and verified on screen):
1) `uptime`
2) `cat /proc/loadavg`
3) `nproc`
4) `uptime`
5) `ps -eo pid,comm,%cpu --sort=-%cpu | head -6`
Hit Subscribe for more hands-on Linux, DevOps, and sysadmin tutorials. Drop a comment below: what's the highest load average you've ever seen on a production server, and what was causing it?
#linux #devops #linuxcommands #sysadmin #uptime #loadavg #servertuning #linuxTutorial
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