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Caching information should be available from the application profiling page.
Added cache operations to the 'queries' section of the profiler stats…
… (Issue #1370)
Fix whitespace for IFs (Issue #1370)
Added braces and microtime(TRUE) for caching patch (Issue #1370)
Fix usage of microtime (Issue #1370)
Is this done? Are there more places that cache profiling needs to be added/tweaked?
Two years without a peep sounds like an abandoned issue.
It's not done ... the referenced commit are in the OP's own fork and (iirc) have never been submitted as a pull request.
I'm also not in favor of such a feature as caches are supposed to be really fast and should be the last place to look for bottlenecks, so I don't think there's any benefit in this.