Hi
I am using Fedora 18, when i run the above explained(iostat) command it's
giving error. No command found.
Is this command come with default installation or have to install later.
On Tue, Jun 18, 2013 at 10:26 AM, Dhana Sekar <tkdhanase...@gmail.com>wrote:
> command: iostat
> purpose: Reports Central Processing Unit (CPU) statistics, asynchronous
> input/output (AIO and input/output statistics for the
> entire system,
> adapters, TTY devices, disks and CD-ROMs.
>
> syntax: iostat [ -c ] [ -d ] [ -h ] [ -N ] [ -k | -m ] [ -t ] [ -V ] [
> -x ] [-z ] [ device [...] | ALL ]
> [ -p [ device [,...] | ALL ] ] [ interval [count ] ]
>
>
> options: -c Display the CPU utilization report.
> -d Display the device utilization report.
> -h Make the Device Utilization Report easier to read by a
> human.
> -k Display statistics in kilobytes per second.
> -m Display statistics in megabytes per second.
> -N Display the registered device mapper names for any
> device mapper devices.
> Useful for viewing LVM2 statistics.
> -p [ { device [,...] | ALL } The -p option displays
> statistics for block devices and all
> their partitions that are used by the system.
> -t Print the time for each report displayed. The
> timestamp format
> may depend on the value of the S_TIME_FORMAT
> environment variable
> -V Print version number then exit.
> -x Display extended statistics.
> -z Tell iostat to omit output for any devices for which
> there was
> no activity during the sample period.
> examples:
>
> 1. To display a single history since boot report for all
> TTY, CPU, and Disks, type:
> #iostat
> 2. To display a continuous disk report at two second
> intervals for the disk with the logical name disk1,
> type:
> #iostat -d disk1 2
> 3. To display six reports at two second intervals for the
> disk with the logical name disk1, type:
> #iostat disk1 2 6
> 4. To display six reports at two second intervals for all
> disks, type:
> #iostat -d 2 6
> 5. To display six reports at two second intervals for
> three disks named disk1, disk2, disk3, type:
> #iostat disk1 disk2 disk3 2 6
> 6. To print the System throughput report since boot, type:
> #iostat -s
> 7. To print the Adapter throughput reports at 5-second
> intervals, type:
> #iostat -a 5
> 8. To print 10 System and Adapter throughput reports at
> 20-second intervals, with only the TTY and
> CPU report (no disk reports), type:
> #iostat -sat 20 10
> 9. To display time stamp next to each line of output of
> iostat, type:
> #iostat -T 60
> 10. To display 6 reports at 2-second intervals on AIO,
> type:
> #iostat -A 2 6
> 11. To display AIO statistics since boot for queues
> associated with all mounted filesystems, type:
> #iostat -A -Q
> 12. To display extended drive report for all disks, type:
> #iostat -D
>
> file: /usr/bin/iostat Contains the iostat command.
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