[tmd83]

There seems to be newer players both open source and commercial now. But a lot of the focus seems in metric and specially distributed traces. Does anyone in the open source do code level profiling (cpu, allocation, locks etc.) preferably sampling profiler (including Java)?

I have only really found pyroscope.

[jasonjmcghee]

Search for eBPF (continuous) profiling. Grafana supports this through their agent, for example.

(I've never used it, just found it after a quick search)