Let’s first talk about the reason I started looking for this. I have a couple of services running in Ubuntu including DBs like MySQL, MongoDB, etc. along with running nGinx and other services.
However, sometimes, I noticed that the memory consumption goes upwards and it’s wise to know which process could be responsible for this.
I decided to look into this using the ps command
ps -eo pmem,pcpu,pid,args | tail -n +2 | sort -rnk 1 | head
Let’s look at the arguments provided:
| ps | Current process snapshot report |
| -e | Select all processes. Identical to -A. |
| -o | format is a single argument in the form of a blank-separated or comma-separated list, which offers a way to specify individual output columns. |
| pmem | the ratio of the process’s resident set size to the physical memory on the machine, expressed as a percentage. |
| pcpu | CPU utilization of the process in the “##.#” format. Currently, it is the CPU time used divided by the time the process has been running (cputime/real time ratio), expressed as a percentage. |
| pid | A number representing the process ID |
| args | Command with all its arguments as a string. |
| tail -n +2 | Output lines starting to the second line |
| sort -rnk 1 | r (reverse) n(numeric sort) by column 1 i.e., pmem |
| head | Output the first 10 lines |
Hope it helps!
Cloud Solution Architect at Microsoft
Anubhav is a Program Freak who loves coding and is currently working as a Cloud Solution Architect at Microsoft. He is very passionate about Coding and loves building intelligent solutions.
Latest posts by Anubhav Ranjan (see all)
- Use TOTP for securing API Requests - July 12, 2024
- Backup Files from Ubuntu to Azure - December 14, 2023
- Read Gzip Log Files without Extracting - June 13, 2023