[nvarsj]

eBPF helps with kernel observability - an area that has been sorely lacking in the past. For the JVM or .NET, they give you virtually no insight at all into system calls - so eBPF is complementary to VM profilers, not a replacement. If you ever used Shark on OS X you will get a sense of how cool this is - this was a profiler for the OS X JVM which profiled the system calls as well and combined it all into a single trace tree. Maybe one day we'll get similar profilers on Linux for these systems - with eBPF it should be fairly straightforward.

OpenTelemetry is just a reference API. You could export metrics using eBPF as well. I'm pretty sure Sysdig does this for example.

[WatchDog]

See Brendan Gregg's excellent work in this space

http://www.brendangregg.com/blog/2014-06-12/java-flame-graph...