Read: How to fix system program problem detected error on Ubuntu Specific user processes Remember to press q whenever you want to exit the current mode. %MEM: Memory usage of the corresponding task. SHR: Represents the Shared Memory size (kb) used by the corresponding task. TIME+: CPU Time to the hundredths of a second is the the same as ‘TIME’, but with more granularity though. Update, expressed as a % of total CPU time. %CPU: The corresponding task’s share of the already elapsed CPU time since the last screen SHR: The amount of currently shared memory used by the corresponding task. RES: Resident size (kb) is the non swapped physical memory the corresponding task has used VIRT: Total virtual memory currently used by the corresponding task. A Negative ‘nice’ value indicates a higher priority whereas a positive ‘nice’ implies a priority. NI: ‘Nice’ Value of the corresponding task. PR: Priority of the the corresponding task. USER: User name of the the corresponding task owner. PID: The unique process id of the corresponding task. Here is a quick explanation of some of the important columns displayed by the top tool : The top half of the display shows the processes’ statistics and resource usage, while the lower half shows the currently active list of processes. It displays a summarized, interactive, column-based list of threads and processes handled by the Linux kernel. The top command provides a dynamic, real-time overview of your system’s current workload. In order to see this in action, open up your terminal and type in: The ‘top’ command can display the processes that are eating up large amounts of memory.
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