What are the 3 values in the top command refer to?
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What are the 3 values in the top command refer to?
average load on the system (load average: 0.02, 0.12, 0.07) the 3 values refer to the last minute, five minutes and 15 minutes.
What is the difference between top and ps?
ps enables you to see all your processes, or just the processes used by certain users, for example root or yourself. top should be used to see which processes are most active, ps could be used to see which processes you (or any other user) are running currently.
What is S and R in top command?
From the top man page: ‘D’ = uninterruptible sleep ‘R’ = running ‘S’ = sleeping ‘T’ = traced or stopped ‘Z’ = zombie. ‘R’ is the easiest; the process is ready to run, and will run whenever its turn to use the CPU comes.
What is Virt and RES in top command?
VIRT represents how much memory the program is able to access at the present moment. RES stands 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.)
What are top commands?
The top (table of processes) command shows a real-time view of running processes in Linux and displays kernel-managed tasks. The command also provides a system information summary that shows resource utilization, including CPU and memory usage. In this tutorial, you will learn to use the top command in Linux.
Why we use top command in Linux?
top command is used to show the Linux processes. It provides a dynamic real-time view of the running system. Usually, this command shows the summary information of the system and the list of processes or threads which are currently managed by the Linux Kernel.
What is WA in top command?
id – Time spent in idle operations. wa – Time spent on waiting on IO peripherals (eg. disk) hi – Time spent handling hardware interrupt routines. (
What is Virt and res?
VIRT is the total memory that this process has access to shared memory, mapped pages, swapped out pages, etc. RES is the total physical memory used shared or private that the process has access to. SHR is the total physical shared memory that the process has access to.
What does Time+ mean in top?
the total CPU time
TIME+ is the cumulative time displayed. It is the total CPU time the task has used since it is started.
What is Unix top command?
The top (table of processes) command shows a real-time view of running processes in Linux and displays kernel-managed tasks. The command also provides a system information summary that shows resource utilization, including CPU and memory usage.
What is top command used for in Unix?
What is output of top command?
Examples: 1) Exit Top Command After Specific repetition: Top output keep refreshing until you press ‘q’. With below command top command will automatically exit after 10 number of repetition. top -n 10. 2) Display Specific User Process top -u paras.
How do you read htop?
Use htop like a pro:
- Scroll the process list horizontally and vertically using the arrow keys.
- Kill a process by pressing the F9′ key.
- Renice a process by pressing the ‘F7’ or ‘F8’ key’s.
- List open files used by a process by pressing the ‘l’ key.
- Display only processes of a single user by pressing the ‘u’ key.
What is PR and Ni in top command?
NI (Nice Value): Also depicts the priority of the task. The difference between PR and NI is that PR is the real priority of a process as seen by the kernel, while NI is just a priority hint for the kernel. A negative nice value means higher priority, whereas a positive nice value means lower priority.
What is US and Sy in top command?
us: user cpu time (or) % CPU time spent in user space sy: system cpu time (or) % CPU time spent in kernel space ni: user nice cpu time (or) % CPU time spent on low priority processes id: idle cpu time (or) % CPU time spent idle wa: io wait cpu time (or) % CPU time spent in wait (on disk) hi: hardware irq (or) % CPU …
What is top Virt?
VIRT (Virtual Memory Size in KiB): Depicts the total amount of virtual memory used by the task. Virtual memory includes all code, data, and shared libraries. It also includes pages that have been swapped out and pages that have been mapped but not used.
What is MiB MEM in top?
In top, memory is displayed in “MiB” or mebibytes. 1 mebibyte equals 1,048,576 bytes, which is 1024 x 1024 bytes.
