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What does the iostat command do in Linux?
The iostat command is used for monitoring system input/output device loading by observing the time the devices are active in relation to their average transfer rates. The iostat command generates reports that can be used to change system configuration to better balance the input/output load between physical disks.
How do I get iostat on Linux?
Command to install on different Distros:
- On RedHat / CentOS / Fedora yum install sysstat.
- On Debian / Ubuntu / Linux Mint apt-get install sysstat.
How do I get Iostat on Linux?
How do I enable Iostat in Linux?
Linux iostat command to report CPU statistics and I/O statistics:
- CentOS. yum install sysstat.
- Ubuntu / Debian. sudo apt-get install sysstat.
- Section 1: the CPU report.
- Section 2: the device utilization report.
- Display megabytes instead of bytes.
- Display extended status.
- Run iostat with a delay.
- Display only one report section.
How does Systemd work in Linux?
systemd is a system and service manager for Linux operating systems. When run as first process on boot (as PID 1), it acts as init system that brings up and maintains userspace services. Separate instances are started for logged-in users to start their services.
How to run iostat with delay in Linux?
8) iostat -k 2 3 Command: This command displays CPU and device statistics with delay. Same with the vmstat, as a statistic tool is the best way to use it with delay parameter. With the delay, we can see that what’s the trend. Here are some of the samples to run iostat with delay.
How to display extended Statistics in iostat command?
5) iostat -xd Command: This command shows us the extended I/O statistic for device only. We can display extended the statistic on one side and from the other side we can display the extended statistics. It means that we can display the extended statistics only for devices with the help of -xd option as below:
Do you need to indicate device name in iostat?
No need to indicate each of the device names. It will display statistics for block devices and all their partitions that are being used by the system. If a device name is entered on the command line, then the statistics for it and all of its partitions are displayed. Just use this -p option.
How to report CPU and I / O statistics in Linux?
If you don’t have it, you need to install first. Note: 10 Linux iostat Command to Report CPU and I/O Statistics are listed below: iostat: Get report and statistic. iostat -x: Show more details statistics information. iostat -c: Show only the cpu statistic. iostat -d: Display only the device report.