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To only see only jobs of a specific user you can call it with:
top -u username
Alternatively, you can also press 'u' once top is open. In the 6st line you will then see :
Which user (blank for all)
Then you can just start typing or copy-pasting the username.
By default, 'top' sorts all jobs by cpu usage. To sort them by memory usage just type 'M' (capital 'm') once 'top' is open.
To quit 'top' just press 'q'.
Output explanation
The column headings in the process list are as follows (most important ones are in red):
- PID: Process ID.
- USER: The owner of the process.
- PR: Process priority.
- NI: The nice value of the process.
- VIRT: Amount of virtual virtual memory used by the process. On our servers, currently, the maximum virtual memory a job can use is 25% of the total memory. Which is means 64 GB on most of our servers.
- RES: Amount of resident resident memory used by the process. This is the actual memory your process is using.!!!
- SHR: Amount of shared memory used by the process.
- S: Status of the process. (See the list below for the values this field can take).
- %CPU: The share of CPU time used by the process since the last update. Can go up to a little more than 100%.
- %MEM: The share of physical memory used.
- TIME+: Total CPU time used by the task in hundredths of a second.
- COMMAND: The command name or command line (name + options).
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