Monitoring IO Performance
Introduction
The Iostat is primarily used to monitor the IO load on the system device, iostat the statistics from the start of the system startup when the first run, and then running Iostat displays statistics from the last time the command was run. Users can obtain the required statistics by specifying the number and time of the statistics.
Use
Iostat-x 1
-X is an option disk that uses 1 to indicate that data is refreshed every 1 seconds
The output is as follows
[[email protected] ~]# iostat -x 1 2 2 indicates range two times linux 3.10.0-693. el7.x86_64 (Localhost.localdomain) 2017 November 29 _x86_64_ (1 CPU) avg-cpu: %user %nice % system %iowait %steal %idle 0.20 0.00 0.43 0.03 0.00 99.34Device: rrqm/s wrqm/s r/s w/s rkb/s wkb/s avgrq-sz avgqu-sz await r _await w_await svctm %utilsda 0.00 0.01 0.08 0.08 3.10 2.92 76.58 0.01 33.47 13.81 52.92 5.07 0.08scd0 0.00 0.00 0.00 0.00 0.02 0.00 114.22 0.00 3.83 3.83 0.00 3.67 0.00dm-0 0.00 0.00 0.07 0.09 2.93 2.89 72.74 0.01 38.83 15.05 57.48 4.94 0.08dm-1 0.00 0.00 0.00 0.00 0.04 0.00 47.40 0.00 0.32 0.32 0.00 0.27 0.00avg-cpu: %user %nice %system %iowait %steal %idle 0.00 0.00 0.00 0.00 0.00 100.00device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %utilsda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00scd0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00dm-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Free command
PS command
View network Status
Linux under Grab Bag
Monitor IO performance, free command, PS command, view network status, Linux under Grab package