Info:iotop tracks real-time disk I/O. -a accumulates total I/O since start, -o filters active processes, and -P groups activity by process instead of thread.
Examples:
$ sudo iotop -o # Show only processes actively performing I/O
$ sudo iotop -b -n 5 > iotop.log # Run in batch mode and save output
$ pidstat -d 1 # Check per-process I/O activity
Note: Excessive writes can contribute to SSD wear over time. Monitor drive health and wear indicators with smartctl -a /dev/sda. You may need to install iotop and smartmontools first.
LinuxTeck.com
linuxteck@ubuntu:~$ sudo iotop -aoP -d 5
Total DISK READ: 2.34 M/s | Total DISK WRITE: 45.67 M/s
Current DISK READ: 0.00 B/s | Current DISK WRITE: 23.45 M/s
PID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND
3456 be/4 mysql 234 M 12.34 G 0.00 % 45.23 % mysqld
2134 be/4 root 45.6 M 2.34 G 0.00 % 8.12 % journalctl
5678 be/4 elastic 123.4 M 1.89 G 0.00 % 6.45 % java -Xms1g
1234 be/4 nginx 12.3 M 567 M 0.00 % 2.34 % nginx: worker
4321 be/4 root 2.3 M 123 M 0.00 % 0.89 % systemd-journald
linuxteck@ubuntu:~$
John Britto Founder & Chief-Editor @LinuxTeck. A Computer Geek and Linux Intellectual having more than 20+ years of experience in Linux and Open Source technologies.
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