Monitor IO performance, free command, PS command, view network status, Linux under Grab package

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