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diff --git a/system/ioping/README b/system/ioping/README new file mode 100644 index 0000000000..7db64d66ce --- /dev/null +++ b/system/ioping/README @@ -0,0 +1,82 @@ +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/ + +Supported OS +------------ + +* GNU/Linux +* GNU/HURD +* Windows +* OS X +* FreeBSD +* DragonFlyBSD +* OpenBSD + +Packages +-------- + +* Debian: https://packages.debian.org/unstable/main/ioping +* Ubuntu: https://launchpad.net/ubuntu/+source/ioping +* Fedora: https://apps.fedoraproject.org/packages/ioping +* ArchLinux: https://www.archlinux.org/packages/community/x86_64/ioping +* AltLinux: http://www.sisyphus.ru/en/srpm/Sisyphus/ioping +* Gentoo: https://packages.gentoo.org/package/app-benchmarks/ioping +* Nix: https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/system/ioping/default.nix +* FreeBSD: http://www.freshports.org/sysutils/ioping +* OS X: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/ioping.rb + +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> + |