Linked by Thom Holwerda on Mon 6th Apr 2009 00:05 UTC
General Unix Take a look at some systems that enable you to trace the execution of applications and work out what they are doing without having to make any modifications to the source code, and even without having to stop and restart the application. See how with tracing alone, you can find and diagnose problems with just a few commands.
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RE: DTrace superior.
by ba1l on Mon 6th Apr 2009 10:11 UTC in reply to "DTrace superior."
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No, that feature set is not unique to DTrace.

OProfile works on pretty much the same lines, acting as a system-wide profiler. It's not as complex or as capable as DTrace, of course.

SystemTap is a closer equivalent to DTrace on Linux. Less mature, but probably covers 90% of the things you might want to use DTrace for.

I won't argue that DTrace isn't better than those options (I've not used either of them enough to say anything of the sort), but the way DTrace functions is certainly not unique.

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