dtrace discuss - May 2010 - Memory fragmentation visualization with DTrace

A posting here
http://blog.pavlov.net/2007/12/04/vlad-and-analysis-of-dtrace-was-used/ shows
some graphs visualizing Firefox memory fragmentation, and says that it was
produced based on DTrace results. Are there any openly available tools for such
benchmarking?

Thanks.

Hillel.
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