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82 lines
2.2 KiB
Text
82 lines
2.2 KiB
Text
ioping
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======
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An tool to monitor I/O latency in real time.
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It shows disk latency in the same way as ping shows network latency.
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Homepage: https://github.com/koct9i/ioping/
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(migrated from http://code.google.com/p/ioping/)
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Please send your patches, issues and questions to
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https://github.com/koct9i/ioping/issues/
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Supported OS
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------------
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* GNU/Linux
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* GNU/HURD
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* Windows
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* OS X
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* FreeBSD
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* DragonFlyBSD
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* OpenBSD
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Packages
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--------
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* Debian: https://packages.debian.org/unstable/main/ioping
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* Ubuntu: https://launchpad.net/ubuntu/+source/ioping
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* Fedora: https://apps.fedoraproject.org/packages/ioping
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* ArchLinux: https://www.archlinux.org/packages/community/x86_64/ioping
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* AltLinux: http://www.sisyphus.ru/en/srpm/Sisyphus/ioping
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* Gentoo: https://packages.gentoo.org/package/app-benchmarks/ioping
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* Nix: https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/system/ioping/default.nix
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* FreeBSD: http://www.freshports.org/sysutils/ioping
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* OS X: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/ioping.rb
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Examples
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--------
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Show disk I/O latency using the default values and the current directory, until interrupted
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```
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$ ioping .
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4096 bytes from . (ext4 /dev/sda3): request=1 time=0.2 ms
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4096 bytes from . (ext4 /dev/sda3): request=2 time=0.2 ms
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4096 bytes from . (ext4 /dev/sda3): request=3 time=0.3 ms
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4096 bytes from . (ext4 /dev/sda3): request=4 time=12.7 ms
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4096 bytes from . (ext4 /dev/sda3): request=5 time=0.3 ms
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^C
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--- . (ext4 /dev/sda3) ioping statistics ---
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5 requests completed in 4794.0 ms, 364 iops, 1.4 MiB/s
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min/avg/max/mdev = 0.2/2.8/12.7/5.0 ms
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```
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Measure disk seek rate (iops, avg)
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```
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$ ioping -R /dev/sda
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--- /dev/sda (device 465.8 GiB) ioping statistics ---
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186 requests completed in 3004.6 ms, 62 iops, 0.2 MiB/s
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min/avg/max/mdev = 6.4/16.0/26.8/4.7 ms
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```
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Measure disk sequential speed (MiB/s)
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```
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$ ioping -RL /dev/sda
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--- /dev/sda (device 465.8 GiB) ioping statistics ---
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837 requests completed in 3004.1 ms, 292 iops, 72.9 MiB/s
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min/avg/max/mdev = 2.0/3.4/28.9/2.0 ms
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```
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Authors
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-------
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* Konstantin Khlebnikov <koct9i@gmail.com>
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* Kir Kolyshkin <kir@openvz.org>
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Licensed under GPLv3 (or later) <http://www.gnu.org/licenses/gpl-3.0.txt>
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