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Which tools to use for detailed performance analysis of disk access?

  • per disk
  • per process
  • queues
  • latency
  • data volume/throughput
  • errors
  • characterisation (read Vs write, burst, etc.)

Tried iostat, iopending, could use a syste

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Have you tried "Activity Monitor" –  Stephen Jun 4 '12 at 0:00

1 Answer 1

up vote 3 down vote accepted

Instruments (which is part of Xcode) and dtrace are the heavy hitting analytical tools for most disk measurement jobs. Both are free and both take a little training to use unless you find someone to set up your traces for you to match your above criteria.

Look for errors in system.log or the console app.

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