top 命令

常用示例

说明

top provides a dynamic real-time view of a running system. It displays system summary information and a list of processes or threads currently being managed by the Linux kernel. The display is updated periodically and can be customized interactively.

参数

-b, --batch

Run in batch mode (non-interactive), useful for piping output.

-c, --cmdline-toggle

Toggle between command line and program name display.

-d _SECS_, --delay=SECS

Set the delay between screen updates (default: 3.0 seconds).

-e, --scale-task-mem

Scale task memory values (k/m/g/t/p).

-E, --scale-summary-mem

Scale summary memory values (k/m/g/t/p/e).

-H, --threads-show

Display individual threads instead of processes.

-i, --idle-toggle

Hide idle and zombie processes.

-n _NUMBER_, --iterations=NUMBER

Set maximum number of iterations before exit.

-o _FIELD_, --sort-override=FIELD

Override the default sort field. Prefix with + or - for ascending/descending.

-p _PIDLIST_, --pid=PIDLIST

Monitor only specified process IDs (comma-separated).

-S, --accum-time-toggle

Toggle cumulative time mode, showing CPU time used by each process and its dead children.

-s, --secure-mode

Start top in secure mode, disabling potentially dangerous interactive commands.

-u _USER_, --filter-only-euser=USER

Show only processes for specified effective user.

-U _USER_, --filter-any-user=USER

Show processes for specified user (real, effective, saved, filesystem).

-w _WIDTH_, --width=WIDTH

Override screen width in batch mode (minimum 80 characters).