On Windows, it might help to install the Windows Subsystem for Linux WSL, or install Process Explorer and Process Monitor from the Microsoft Sysinternals toolsuite.
On Linux, you can use pidstat
(from the sysstat
package) to track cpu- and memory usage of specific processes.
- For instance, open an ebook in an ebook reader. (this is a long-running, single-instance process)
- open a terminal window and type
pidstat -p $(pgrep -f .epub) 1
- scroll the ebook little bit to give the cpu some work to do
I get this output
pidstat -p $(pgrep -f .epub) 1
Linux 4.15.0-66-generic (xx) 11/14/2019 _x86_64_ (4 CPU)
12:18:10 PM UID PID %usr %system %guest %wait %CPU CPU Command
12:18:11 PM 1000 36636 0.00 0.00 0.00 0.00 0.00 3 ebook-viewer
12:18:12 PM 1000 36636 0.00 0.00 0.00 0.00 0.00 3 ebook-viewer
12:18:13 PM 1000 36636 2.00 0.00 0.00 0.00 2.00 1 ebook-viewer
12:18:14 PM 1000 36636 2.00 2.00 0.00 2.00 4.00 3 ebook-viewer
12:18:15 PM 1000 36636 14.00 1.00 0.00 1.00 15.00 3 ebook-viewer
12:18:16 PM 1000 36636 35.00 2.00 0.00 2.00 37.00 0 ebook-viewer
12:18:17 PM 1000 36636 2.00 0.00 0.00 1.00 2.00 0 ebook-viewer
12:18:18 PM 1000 36636 5.00 1.00 0.00 1.00 6.00 3 ebook-viewer
12:18:19 PM 1000 36636 1.00 0.00 0.00 1.00 1.00 0 ebook-viewer
Average: 1000 36636 5.82 0.55 0.00 0.91 6.36 - ebook-viewer
For short-running processes, and for displaying memory consumption, issue this command:
pidstat -r 1 -e /usr/bin/python2.7 /usr/bin/ebook-viewer /home/knb/Dropbox/books/howlinuxworks.epub
This gives you this output (note %MEM column) :
12:29:01 PM UID PID minflt/s majflt/s VSZ RSS %MEM Command
12:29:02 PM 1000 43888 23400.00 0.00 2220516 151964 0.62 python2.7
12:29:03 PM 1000 43888 12027.00 0.00 2397208 193584 0.78 python2.7
12:29:04 PM 1000 43888 4562.00 0.00 2478048 197148 0.80 python2.7
12:29:05 PM 1000 43888 3808.00 0.00 2496188 211120 0.86 python2.7
12:29:06 PM 1000 43888 186.00 0.00 2496264 212072 0.86 python2.7
12:29:07 PM 1000 43888 0.00 0.00 2496264 211752 0.86 python2.7
12:29:08 PM 1000 43888 16.00 0.00 2496264 211908 0.86 python2.7
12:29:09 PM 1000 43888 29.00 0.00 2496264 211440 0.86 python2.7