1. 默认统计指标
dstat 不带参数，默认参数参考下例，连续打印，1条记录/s
dstat 3 5 输出时间间隔为3秒钟,总共输出5次(实际会有6行，第一行是针对之前的数据统计),每行记录在3s内会不断刷新
[root@xxx bin]# dstat 3 5
----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read writ| recv send| in out | int csw
0 0 100 0 0 0| 70B 2299B| 0 0 | 0 0 | 25 12
0 0 100 0 0 0| 0 0 | 447B 113B| 0 0 | 24 14
0 0 100 0 0 0| 0 0 | 646B 113B| 0 0 | 27 15
0 0 100 0 0 0| 0 2731B| 539B 113B| 0 0 | 28 17
0 0 100 0 0 0| 0 0 | 755B 107B| 0 0 | 27 18
0 0 100 0 0 0| 0 0 | 554B 107B| 0 0 | 24 14
[root@xxx bin]#
2.显示其它统计指标
-l ：显示负载统计
-m ：显示内存使用
-r ：显示I/O统计
-s ：显示交换分区使用
-t ：第一列显示当前实际
–-tcp ：显示常用的TCP统计
–-socket ：显示网络统计数据
-–freespace ：显示当前磁盘空间使用率
-–proc-count ：显示正在运行的程序数量
[root@xxx bin]# dstat -m 3 2
------memory-usage-----
used buff cach free
304M 176M 2213M 12.9G
304M 176M 2213M 12.9G
304M 176M 2213M 12.9G
[root@xxx bin]# dstat -l 3 2
---load-avg---
1m 5m 15m
0 0 0
0 0 0
0 0 0
[root@xxx bin]# dstat -r 3 2
--io/total-
read writ
0.00 0.22
0 0
0 0
[root@xxx bin]# dstat -s 3 2
----swap---
used free
0 16G
0 16G
0 16G
[root@xxx bin]# dstat -t
----system----
date/time
12-03 16:19:51
12-03 16:19:52
12-03 16:19:53
12-03 16:19:54
12-03 16:19:55^C
[root@xxx bin]#
[root@xxx bin]# dstat -t -c -m
----system---- ----total-cpu-usage---- ------memory-usage-----
date/time |usr sys idl wai hiq siq| used buff cach free
12-03 16:20:28| 0 0 100 0 0 0| 304M 176M 2213M 12.9G
12-03 16:20:29| 0 0 100 0 0 0| 304M 176M 2213M 12.9G
12-03 16:20:30| 0 0 100 0 0 0| 304M 176M 2213M 12.9G^C
[root@xxx bin]#
3.将结果输写入csv文件
dstat –-output <csv file path> 输出结果写到一个csv格式
[root@xxx bin]# dstat --output test22.csv --tcp
----tcp-sockets----
lis act syn tim clo
11 8 0 0 0
11 8 0 0 0
11 8 0 0 0
11 8 0 0 0^C
[root@xxx bin]# cat test22.csv
"Dstat 0.7.0 CSV output"
"Author:","Dag Wieers <[email protected]>",,,,"URL:","http://dag.wieers.com/home-made/dstat/"
"Host:","xxx",,,,"User:","root"
"Cmdline:","dstat --output test22.csv --tcp",,,,"Date:","12 Mar 2020 16:39:01 CST"
"tcp sockets",,,,
"lis","act","syn","tim","clo"
11.0,8.0,0.0,0.0,0.0
11.0,8.0,0.0,0.0,0.0
11.0,8.0,0.0,0.0,0.0
11.0,8.0,0.0,0.0,0.0
[root@xxx bin]#
更多选项参考 man dstat
--top-bio
show most expensive block I/O process
--top-cpu
show most expensive CPU process
--top-cputime
show process using the most CPU time (in ms)
--top-cputime-avg
show process with the highest average timeslice (in ms)
--top-io
show most expensive I/O process
--top-latency
show process with highest total latency (in ms)
--top-latency-avg
show process with the highest average latency (in ms)
--top-mem
show process using the most memory
--top-oom
show process that will be killed by OOM the first
参考资料：Linux终端下dstat监控工具 https://linux.cn/article-3215-1.html