To get IO read/write rate, run
sar -b 1 30
Example
root@server12:~# sar -b 1 30 Linux 2.6.32-754.18.2.el6.x86_64 (server12.hosthat.com) 12/07/2021 _x86_64_ (8 CPU) 08:47:15 PM tps rtps wtps bread/s bwrtn/s 08:47:16 PM 121.00 0.00 121.00 0.00 940.00 08:47:17 PM 0.00 0.00 0.00 0.00 0.00 08:47:18 PM 6.06 6.06 0.00 549.49 0.00 08:47:19 PM 0.00 0.00 0.00 0.00 0.00 08:47:20 PM 204.95 11.88 193.07 174.26 2879.21 08:47:21 PM 579.38 2.06 577.32 16.49 4950.52 08:47:22 PM 2.04 0.00 2.04 0.00 2.04 08:47:23 PM 6.06 6.06 0.00 48.48 0.00 08:47:24 PM 50.51 50.51 0.00 694.95 0.00 08:47:25 PM 206.12 16.33 189.80 195.92 2746.94 08:47:26 PM 1239.39 30.30 1209.09 985.86 10927.27 08:47:27 PM 369.70 3.03 366.67 24.24 4906.06 08:47:28 PM 7.14 5.10 2.04 40.82 1.02 08:47:29 PM 0.00 0.00 0.00 0.00 0.00 08:47:30 PM 211.22 6.12 205.10 97.96 3114.29 08:47:31 PM 646.00 0.00 646.00 0.00 5426.00 08:47:32 PM 16.16 14.14 2.02 129.29 2.02 08:47:33 PM 0.00 0.00 0.00 0.00 0.00 08:47:34 PM 4.08 4.08 0.00 48.98 0.00 08:47:35 PM 216.00 2.00 214.00 512.00 3410.00 08:47:36 PM 448.00 8.00 440.00 96.00 3652.00 08:47:37 PM 2.06 0.00 2.06 0.00 2.06 08:47:38 PM 0.00 0.00 0.00 0.00 0.00 08:47:39 PM 10.10 10.10 0.00 177.78 0.00 08:47:40 PM 189.00 8.00 181.00 160.00 2650.00 08:47:41 PM 294.85 0.00 294.85 0.00 2420.62 08:47:42 PM 8.00 6.00 2.00 48.00 2.00 08:47:43 PM 2.02 2.02 0.00 517.17 0.00 08:47:44 PM 12.12 12.12 0.00 113.13 0.00 08:47:45 PM 179.59 6.12 173.47 65.31 2434.69 Average: 168.06 7.02 161.04 157.19 1686.36 root@server12:~#
To see system load, run
sar -u -o 1 30