Monitoring
When a system is slow, the main question is which resource ran out. Usually you look at four: the processor, memory, disk, network. In this lesson you take the first readings, all read-only: the list of processes, memory, the load average, and a general summary. This is the first look you start a diagnosis with.
Nothing to set up: every command works right away and changes nothing.
What to understand
A bottleneck is the resource that hit its ceiling first. Until you find it, speeding up the rest is pointless.
The load average is how many processes on average use the processor or wait in line for it over 1, 5 and 15 minutes. The three numbers show whether the load is rising or falling.
A snapshot and a stream You are reading the open part. Buy the course to unlock the whole lesson and its lab.The rest of this lesson is part of a paid course