plockstat broken

Originator:SimonXWilkinson
Number:rdar://12533717 Date Originated:19 October 2012
Status:Open Resolved:
Product:Mac OS X Product Version:10.7 and later
Classification:Bug Reproducible:Always
 
Summary:

plockstat fails to produce contention lock output, because the mutex-block probe is missing

Steps to Reproduce:

plockstat -C <binary>

Expected Results:

plockstat produces a list of contended mutexes

Actual Results:

plockstat exits with 

plockstat: failed to compile program: probe description plockstat31231:::mutex-block does not match any probes

Regression:

plockstat worked correctly in Snow Leopard

Notes:

Running dtrace -l confirms that the mutex-block probe is not available

Comments


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