pidstat
used for monitoring individual tasks currently being managed by the Linux kernel
TLDR
Show CPU statistics at 2 second interval
$ pidstat 2 10
Show page faults and memory utilization$ pidstat -r
Show I/O usage per process$ pidstat -d
Show information for a specific PID$ pidstat -p 1234
Show memory statistics for processes matching pattern$ pidstat -C "pattern" -r -p ALL
Show context switches$ pidstat -w
SYNOPSIS
pidstat [-d] [-r] [-u] [-w] [-p pid] [-C comm] [interval] [count]
DESCRIPTION
pidstat is used for monitoring individual tasks currently being managed by the Linux kernel. It reports CPU usage, memory utilization, I/O statistics, context switches, and other resource usage for selected processes or all tasks.
PARAMETERS
-d
Display I/O statistics (disk reads/writes, I/O delays)-r
Report page faults and memory utilization metrics-u
Show CPU usage percentages (default if no option specified)-w
Display voluntary and involuntary context switches-s
Report stack memory usage-t
Include thread statistics for selected tasks-p {pid|SELF|ALL}
Select specific process(es), current process, or all tasks-T {TASK|CHILD|ALL}
Monitor individual tasks, children, or both-C comm
Filter by command name using regex patterns-G process_name
Display processes matching name pattern-l
Show full command names with arguments--human
Format output in human-readable sizes (1.0k, 1.2M)-e program args
Execute and monitor a specific program-H
Display timestamp in seconds since epoch-I
Divide CPU usage by total number of CPUs
CAVEATS
When using -e to run and monitor a program, pidstat will track the executed process. The interval and count parameters control reporting frequency and duration.
HISTORY
pidstat is part of the sysstat package, developed by Sebastien Godard. It provides per-process statistics that complement system-wide tools like mpstat and iostat.