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“ 目录：RHCA+ -> 12 系统监控 -> 9 dstat命令（监控系统资源） ”

查看CPU、网络、磁盘等监控信息；语法格式：dstat [参数]

一、安装

[root@wuzuniao ~]# yum -y install dstat #安装软件包

二、使用

[root@wuzuniao ~]# dstat #查看系统监控

You did not select any stats, using -cdngy by default.

----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--

usr sys idl wai hiq siq| read writ| recv send| in out | int csw

0 0 99 0 0 0| 47k 3615B| 0 0 | 0 0 | 37 64

0 0 100 0 0 0| 0 0 | 180B 886B| 0 0 | 33 42

1 0 99 0 0 0| 0 0 | 300B 444B| 0 0 | 56 81 ^C

[root@wuzuniao ~]# dstat --tcp #查看tcp监控信息

----tcp-sockets----

lis act syn tim clo

10 2 0 0 0

10 2 0 0 0

[root@wuzuniao ~]# dstat --top-mem #查看占用CPU最高的进程

--most-expensive-

memory process

gnome-shell 139M

gnome-shell 139M

[root@wuzuniao ~]# dstat --top-cpu #查看占用内存最高的进程

-most-expensive-

cpu process

gnome-shell 0.2

kworker/0:1 1.0

[root@wuzuniao ~]#

三、查看帮助

[root@wuzuniao ~]# dstat --help #查看帮助

Usage: dstat [-afv] [options..] [delay [count]]

Versatile tool for generating system resource statistics

Dstat options:

-c, --cpu enable cpu stats

-C 0,3,total include cpu0, cpu3 and total

-d, --disk enable disk stats

-D total,hda include hda and total

-g, --page enable page stats

-i, --int enable interrupt stats

-I 5,eth2 include int5 and interrupt used by eth2

-l, --load enable load stats

-m, --mem enable memory stats

-n, --net enable network stats

-N eth1,total include eth1 and total

-p, --proc enable process stats

-r, --io enable io stats (I/O requests completed)

-s, --swap enable swap stats

-S swap1,total include swap1 and total

-t, --time enable time/date output

-T, --epoch enable time counter (seconds since epoch)

-y, --sys enable system stats

--aio enable aio stats

--fs, --filesystem enable fs stats

--ipc enable ipc stats

--lock enable lock stats

--raw enable raw stats

--socket enable socket stats

--tcp enable tcp stats

--udp enable udp stats

--unix enable unix stats

--vm enable vm stats

--plugin-name enable plugins by plugin name (see manual)

--list list all available plugins

-a, --all equals -cdngy (default)

-f, --full automatically expand -C, -D, -I, -N and -S lists

-v, --vmstat equals -pmgdsc -D total

--bits force bits for values expressed in bytes

--float force float values on screen

--integer force integer values on screen

--bw, --blackonwhite change colors for white background terminal

--nocolor disable colors (implies --noupdate)

--noheaders disable repetitive headers

--noupdate disable intermediate updates

--output file write CSV output to file

--profile show profiling statistics when exiting dstat

delay is the delay in seconds between each update (default: 1)

count is the number of updates to display before exiting (default: unlimited)

[root@wuzuniao ~]#