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What is virt in top output?
VIRT stands for the virtual size of a process, which is the sum of memory it is actually using, memory it has mapped into itself (for instance the video card’s RAM for the X server), files on disk that have been mapped into it (most notably shared libraries), and memory shared with other processes.
What is MEM in top command?
If you want to make top a bit more memory-friendly, issue the command top -o %MEM, which will cause top to sort all processes by memory used (Figure 2). The top command also gives you a real-time update on how much of your swap space is being used.
What’s the difference between virt and used in?
VIRT shows virtual memory (assigned on the hard disk and/or RAM) to the process (as explained in the man page). USED = RES + that part of the executable which currently not resides in RAM. ps shows VIRT using vsz flag. Thanks for contributing an answer to Unix & Linux Stack Exchange!
What’s the difference between Virt, res, and SHR?
VIRTstands for the virtual size of a process, which is the sum of memory it is actually using, memory it has mapped into itself (for instance the video card’s RAM for the X server), files on disk that have been mapped into it (most notably shared libraries), and memory shared with other processes.
What’s the difference between resstand and Virt size?
RESstands for the resident size, which is an accurate representation of how much actual physical memory a process is consuming. (This also corresponds directly to the %MEM column) This will virtually always be less than the VIRT size, since most programs depend on the C or other library.
What’s the difference between virt and virtual memory?
VIRT — Virtual Memory Size (KiB) The total amount of virtual memory used by the task. It includes all code, data and shared libraries plus pages that have been swapped out and pages that have been mapped but not used.