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Performs I/O tests (read, seek, write, copy, compare, and more) on files, disks, partitions and logical volumes.


  • Various addressing patterns: increasing, decreasing, random, and more
  • Basic tests: read, seek, write, create & fill
  • Compound tests: copy, compare, update, refresh, and more
  • Stress tests: using all addressing patterns
  • Test area selection: by size, percent, region, stripes, or combinations thereof
  • Test duration control: by elapsed time, alarm-clock, transfer-count or -size
  • Choice of measure units in powers of 1000 or 1024
  • Entropy control for random addressing
  • Extra options: synchronous output, pattern-fill, faster algorythms, and more
  • Free and Open Source Software (FOSS) licensed with GPLv3 and hosted by SourceForge
  • Runs on AIX, Solaris, HP-UX, GNU Linux, BSD Operating Systems, and CygWin


Version: 5.4.68-1


RPM (for AIX5L v5.3 and higher):

Source RPM:

Package dependencies:

  • none

All versions:

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Page last modified on November 12, 2018, at 09:53 AM