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system/ioping: Simplify README.

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Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
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Willy Sudiarto Raharjo 2016-12-31 21:27:17 +07:00
parent bcb29d0da9
commit 2709d7c220
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56
system/ioping/README
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@ -1,58 +1,2 @@
ioping
======
An tool to monitor I/O latency in real time.
It shows disk latency in the same way as ping shows network latency.
Homepage: https://github.com/koct9i/ioping/
(migrated from http://code.google.com/p/ioping/)
Please send your patches, issues and questions to
https://github.com/koct9i/ioping/issues/
Examples
--------
Show disk I/O latency using the default values and the current directory,
until interrupted:
```
$ ioping .
4096 bytes from . (ext4 /dev/sda3): request=1 time=0.2 ms
4096 bytes from . (ext4 /dev/sda3): request=2 time=0.2 ms
4096 bytes from . (ext4 /dev/sda3): request=3 time=0.3 ms
4096 bytes from . (ext4 /dev/sda3): request=4 time=12.7 ms
4096 bytes from . (ext4 /dev/sda3): request=5 time=0.3 ms
^C
--- . (ext4 /dev/sda3) ioping statistics ---
5 requests completed in 4794.0 ms, 364 iops, 1.4 MiB/s
min/avg/max/mdev = 0.2/2.8/12.7/5.0 ms
```
Measure disk seek rate (iops, avg)
```
$ ioping -R /dev/sda
--- /dev/sda (device 465.8 GiB) ioping statistics ---
186 requests completed in 3004.6 ms, 62 iops, 0.2 MiB/s
min/avg/max/mdev = 6.4/16.0/26.8/4.7 ms
```
Measure disk sequential speed (MiB/s)
```
$ ioping -RL /dev/sda
--- /dev/sda (device 465.8 GiB) ioping statistics ---
837 requests completed in 3004.1 ms, 292 iops, 72.9 MiB/s
min/avg/max/mdev = 2.0/3.4/28.9/2.0 ms
```
Authors
-------
* Konstantin Khlebnikov <koct9i@gmail.com>
* Kir Kolyshkin <kir@openvz.org>
Licensed under GPLv3 (or later) <http://www.gnu.org/licenses/gpl-3.0.txt>

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Examples
--------
Show disk I/O latency using the default values and the current directory,
until interrupted:
```
$ ioping .
4096 bytes from . (ext4 /dev/sda3): request=1 time=0.2 ms
4096 bytes from . (ext4 /dev/sda3): request=2 time=0.2 ms
4096 bytes from . (ext4 /dev/sda3): request=3 time=0.3 ms
4096 bytes from . (ext4 /dev/sda3): request=4 time=12.7 ms
4096 bytes from . (ext4 /dev/sda3): request=5 time=0.3 ms
^C
--- . (ext4 /dev/sda3) ioping statistics ---
5 requests completed in 4794.0 ms, 364 iops, 1.4 MiB/s
min/avg/max/mdev = 0.2/2.8/12.7/5.0 ms
```
Measure disk seek rate (iops, avg)
```
$ ioping -R /dev/sda
--- /dev/sda (device 465.8 GiB) ioping statistics ---
186 requests completed in 3004.6 ms, 62 iops, 0.2 MiB/s
min/avg/max/mdev = 6.4/16.0/26.8/4.7 ms
```
Measure disk sequential speed (MiB/s)
```
$ ioping -RL /dev/sda
--- /dev/sda (device 465.8 GiB) ioping statistics ---
837 requests completed in 3004.1 ms, 292 iops, 72.9 MiB/s
min/avg/max/mdev = 2.0/3.4/28.9/2.0 ms
```
Authors
-------
* Konstantin Khlebnikov <koct9i@gmail.com>
* Kir Kolyshkin <kir@openvz.org>
Licensed under GPLv3 (or later) <http://www.gnu.org/licenses/gpl-3.0.txt>