pidstat 命令

常用示例

说明

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.

参数

-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

Show all activities horizontally on a single line; omits average statistics at end of report

-H

Display timestamp in seconds since epoch

-I

In SMP environments, divide CPU usage by total number of processors

-o JSON

Output statistics in JSON format

-R

Report realtime priority and scheduling policy information

-U _username_

Display real username of the tasks; optionally filter by specified user

-v

Report values of kernel tables: number of threads and file descriptors

--dec={0|1|2}

Specify the number of decimal places to use (default: 2)