On Linux, I’d want to retrieve the CPU and memory use of a single process whose PID I know. Using the ‘watch’ command, I should be able to get it every second and save it to a CSV. What command can I use from the Linux command line to retrieve this information?
Asked by Supertux
ps -p <pid> -o %cpu,%mem,cmd
(You can omit “cmd,” although it may be useful for debugging.)
It’s worth noting that this shows the process’s average CPU utilization over the time it’s been running.
Answered by caf
top -p pid> is a variation of caf’s response.
This automatically updates the CPU use, making it useful for monitoring.
Answered by Manki
(Do not use) the ps command:
top command (should use):
To get real-time CPU use (current short interval), use top:
awk ‘print $9’ | top -b -n 2 -d 0.2 -p 6962 | tail -1 | top -b -n 2 -d 0.2 -p 6962
will sound like this: 78.6
Answered by vikyd
You can get the results by searching for the process name.
ps -C chrome -o %cpu,%mem,cmd
You can use process name without knowing its pid if you use the -C option.
Answered by amit
Use the pidstat command (from sysstat – Refer Link).
For example, if you want to monitor these two process IDs (12345 and 11223) every 5 seconds, you can do
$ pidstat -h -r -u -v -p 12345,11223 5
Answered by Neon
Post is based on https://stackoverflow.com/questions/1221555/retrieve-cpu-usage-and-memory-usage-of-a-single-process-on-linux