Bpftrace for Linux 2018
The 2 major problems (ie the Elefant in the room) compared to DTrace are missing:<p>1. security: eBPF still supports arrays and and is therefore inherently insecure to be used in the kernel. DTrace didn't support that feature on purpose and not because they couldn't do it. see spectre/meltdown.<p>2. availability: eBPF probes only work within the kernel. DTrace extends the same interface to the libc level and the user space level. you can trace not only kernel calls, also lib calls and with its high-level language support (Java, python, perl, ruby,...) into userspace. Linux-only eBPF will never be able to support that seemless integration. thanksfully we now have Oracle Linux with proper DTrace support on Linux.