From the course: Ubuntu Linux: Essential Commands and System Administration
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Explore resource bottlenecks
From the course: Ubuntu Linux: Essential Commands and System Administration
Explore resource bottlenecks
If a system is becoming slow to respond to requests, either on the user interface side or through apps and services that it's providing, it may be time to look for performance bottlenecks. The top utility, which we've been using quite a bit in this chapter so far, is a good place to look to determine if your system is resource-constrained because it shows both the general system load indicator, which show how much work the processors are doing, and it also gives us some insight into whether our storage is causing slowdowns through the I/O weight percentage at the top of the display. The system load is indicated as 1.00, being one processor core at full capacity. So as I mentioned earlier, 0.50 means half of one processor's capability is being used. 2.00 on a single-core machine means that the processor is being asked to do about twice as much work as it's able to keep up with. But on a multi-core machine, say a four-core machine, 2.00 means that the system is running at about half…
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