This is the same process monitor as top, but a little easier to use, and it provides text graphs for CPU and memory utilization. Optionally, you can use the htop command. The CPU is still underutilized, with 58% time in idle processes: To start top, simply type in top in your command prompt and press Enter:Īs you can see in the preceding screenshot, a single Python process is using 80% of CPU time. All metrics are updated at a predefined interval of three seconds. This includes CPU usage, memory and swap utilization, running processes, and their respective resource consumption, and so on. The top command shows a summarized view of various resource utilization metrics. Let's start with the most commonly used monitoring command that is top command. You may need sudo privileges to execute some commands. We will look at some common tools used to get CPU usage details. In this recipe, we will focus on tracking CPU performance. Most of the time, you will find higher CPU use, but in reality, the CPU is waiting for data to become available. Tracking exact CPU usage is quite a confusing task. Generally, the CPU spends a big part of processing time waiting for synchronous IO to fetch data from the disk or from a network device. The processing power is still far ahead of the data transfer speeds of I/O devices and networks. Please let me know if you need further information.Modern CPUs generally do not become bottlenecks for performance. What can we do to improve the CPU utilization of that VM? Up to date version of VMware tools installed Here are some specs about the environment and the VM: The vCenter statistics does show a spike on the CPU load, but the spike only climbs up and stays in between 25 and 50 percent or a maximal usage of 7,309 MHz (out of 16,000).

The return of the vmstat 1 command during that time is: Even though there’s a lot of workload on that system, the VM only seems to utilize about 25 % till 50 % of its CPU capacity. The VM has 8 vCPU’s (switched from 2 sockets with 4 cores to 8 sockets with one core) and the latest VMware tools installed. We’re experiencing the following problem with an Ubuntu VM:

Ubuntu show cpu usage