- PID
- Process id
- USER
- Owner of process
- PRI
- The process’s priority. The lower the number, the higher the priority.
- NI
- Nice value of process
- [-20, 20] most to least priority
- nice value only controls CPU time assigned to process and not utilisation of memory and I/O devices.
- VIRT
- How much virtual memory the process is using.
- RES
- How much physical RAM the process is using, measured in kilobytes.
- SHR
- How much shared memory the process is using.
- S
- The current status of the process (zombied, sleeping, running, uninterruptedly sleeping, or traced).
- S: for sleeping (idle)
- R: for running
- D: for disk sleep (uninterruptible)
- Z: for zombie (waiting for parent to read its exit status)
- T: for traced or suspended (e.g by SIGTSTP)
- W: for paging
- I: Idle
- The current status of the process (zombied, sleeping, running, uninterruptedly sleeping, or traced).
- CPU%
- The percentage of the processor time used by the process.
- MEM%
- The percentage of physical RAM used by the process.
- TIME+
- How much processor time the process has used