I just did some manual instrumentation to classworlds since I'm not
trusting the profiler due to native code. For my 2 test projects,
classloading is pretty close to 10% of the total build time (with
-DskipTests).

As I suspected yesterday, this confirms that at least YJP reports
classloading time from ClassLoader.loadClass in near-correct wallclock
time, due to the native code that dominates this implementation. (So
whereas most other reported times from the profiler are 7-8x "actual"
time due to instrumentation, loadClass is pretty close to spot on)

Kristian

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