Linux

Linux seems to have a lack of tools for measuring disk performance, especially recording transfer speed. For analyzing bottlenecks on one of my servers I needed exactly that, so I developed a simple solution. For the impatient: The disk utilities can be found here. There are three utilities available, which are in short: test_diskread.py - Quick-display and record the I/O speed of your disk iograph.py - Display I/O data recorded by the tool "iostat" mon_iostat.py - Monitor values
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