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How to Limit CPU Usage of a Process on Linux

In your Linux lifetime, you must’ve seen some processes take up all the CPU cycles (90-99% CPU usage), making your computer nearly unresponsive till it finishes. That may be alright if the process takes a few seconds to complete. But what If it takes a long time? That’s not very nice to sit and look at your unresponsive computer for minutes and hours, right? Well, Linux has many awesome tools to make these not very nice processes to nice processes.