busybox-2-iostat

一、简介

iostat 可以查看CPU的各种负载，以及读写速率。

用法：

/ # busybox iostat --help
BusyBox v1.31.0 (2019-06-10 15:54:51 CEST) multi-call binary.

Usage: iostat [-c] [-d] [-t] [-z] [-k|-m] [ALL|BLOCKDEV...] [INTERVAL [COUNT]]

Report CPU and I/O statistics

        -c      Show CPU utilization
        -d      Show device utilization
        -t      Print current time
        -z      Omit devices with no activity
        -k      Use kb/s
        -m      Use Mb/s

 

二、用法

1. 例子1

/ # busybox iostat
Linux 6.1.115-android14-11-maybe-dirty (localhost)      04/18/25        _aarch64_       (8 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          17.35    1.61   44.38    0.10    0.00   36.56

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
loop0             0.04         3.42         0.00       3496          0
loop1             0.06         7.41         0.00       7576          0
...
vda              42.09      7631.23       442.46    7806064     452592
vda1              0.01         0.24         0.01        248          8
vda3              0.00         0.26         0.00        264          0
...
dm-0              0.00         0.02         0.00         16          0
dm-1              0.81       266.87         0.00     272984          0
dm-2             20.13      6115.71         0.00    6255824          0
...
loop16            0.02         1.39         0.00       1424          0
loop17            0.21        21.62         0.00      22112          0
...
zram0           198.57        43.08      2800.32      44072    2864480
dm-52            21.35       557.66       440.92     570432     451024
dm-18             0.01         0.20         0.00        208          0
...