Activity monitor can report on a single processes's disk and cpu usage at a single point in time.

The "Sample Process" feature is good for debugging, but doesn't provide easily digestible information.

Apps like iStat are just pretty layers on top of activity monitor.

Is there an app for OSX which will sample a Processes's resource use over time and then provide a report with nice graphs?

Something like DaisyDisk but for cpu and disk usage for a single process over time?


I think BigTop is what you're looking for. It comes with the Developer Tools (which are on the install disc that came with your Mac)

  • +1 thanks daviesgeek, i'll check it out to see if it does what i need
    – andy
    Sep 6 '11 at 10:02
  • hey daviesgeek..... bigtop doesn't seem to work with Lion..? is that correct? cheers
    – andy
    Sep 26 '11 at 3:25
  • @andy I actually don't know. I don't have Lion yet. And from the compatibility issues I have been hearing about, it may be awhile before I upgrade...
    – daviesgeek
    Sep 26 '11 at 4:46

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