rsec/s : The number of sectors read from the hard disk per second.w/s : The number of write requests per second.r/s : The number of read requests per second.wrqm/s : The number of write requests merged per second that were queued to the hard disk.rrqm/s : The number of read requests merged per second that were queued to the hard disk.Here is what I see from my RHEL server: Linux 2.6.18-53.1.4.el5 () ĭevice: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util Open the terminal application and then type the following command: kB_wrtn/s – Kilobytes written per second.ĭisplay 3 reports of extended statistics at 5 second intervals for disk.tps – The transactions per second (IOPS – Input/output operations per second).1 – Interval in seconds to update report.-z Tell the iostat command to leav out any disk devices for which there is no activity.-y Tell the iostat command to omit the first report with statistics since system boot.-d Displays the disk I/O utilization report.$ iostat -dyz disk_name interval count Monitoring Linux disk I/O usage Īre you using the RHEL, Fedora, CentOS Stream, Rocky or Alma Linux? Try the dnf command or yum command as follows to install the sysstat package: Processing triggers for systemd ( 245.4-4ubuntu3.17 ).

Processing triggers for man-db (2.9.1- 1 ). Update-alternatives: using /usr/bin/sar.sysstat to provide /usr/bin/sar (sar ) in auto modeĬreated symlink /etc/systemd/system//rvice → /lib/systemd/system/rvice. Ĭreating config file /etc/default/sysstat with new version 294551 files and directories currently installed. Selecting previously unselected package sysstat.

Get: 1 focal-updates/main amd64 sysstat amd64 12.2.0-2ubuntu0.1

The following NEW packages will be installed:Ġ upgraded, 1 newly installed, 0 to remove and 0 not upgraded.Īfter this operation, 1, 511 kB of additional disk space will be used.

Linux cpu utilization