Top and ps not showing the same cpu result
This is linked to this question.
top
What do the “buff/cache” and “avail mem” fields in top mean?
Within the output of top, there are two fields, marked “buff/cache” and “avail Mem” in the memory and swap usage lines:
Linux “top” command: What are us, sy, ni, id, wa, hi, si and st (for CPU usage)?
When I issue top in Linux, I get a result similar to this:
Determining the particular processor on which a process is running
I have access to an 8-core node of a Linux cluster. When logged in to the node, I can see a list of processors using this command:
Understanding top and load average
I’m observing a high load average on a certain machine (about 9) in all three load fields. I understand load as the number of processes in state “run” / currently desiring CPU time. Am I correct at reasoning that if N processes are running on my machine this cannot produce a load greater than N?
How to find which processes are taking all the memory?
I’m looking for somthing like top is to CPU usage. Is there a command line argument for top that does this? Currently, my memory is so full that even ‘man top’ fails with out of memory 🙂
What is the difference between ps and top command?
What is the difference between ps and top command ? I see that both can display information about running processes . Which one should be used when ?
Is there a way to get “top” to run exactly once and exit?
I find the output of the shell command top to be a simple and familiar way to get a rough idea of the health of a machine. I’d like to serve top‘s output (or something very similar to it) from a tiny web server on a machine for crude monitoring purposes.
How does a CPU know there is IO pending?
I have been looking into the iowait property shown in top utility output as shown below.