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Superluminal is a sampling profiler for the most part. It works great for what it does, sure. But in the author's own words:

> So far, we’ve only used perf to record stack traces at a regular time interval. This is useful, but only scratching the surface.

For cache hits and other counters, you're gonna have to go deeper than just sampling.

How would you go about cache hits instead of using a sampling profiler? Would you use eBPF / BCC?

The article describes using strace and perf in the paragraph after.

> Superluminal is the new industry-standard profiling tool.

Never heard of it and I do a lot of performance related work. Is Superluminal really that popular?

I don't think it's popular but it really worked great for me!

Sadly only for windows though

They are working on a Linux port.