Linux now has eBPF, which is essentially a VM running inside the Linux kernel. You can run your own programs on this little VM and extend the kernel to a stagge

Linux now has eBPF, which is essentially a VM running inside the Linux kernel. You can run your own programs on this little VM and extend the kernel to a staggering degree. Some clever folks have used this to build open source tracing tools that rival and even surpass Dtrace in some ways. Brendan Gregg, a Dtrace wizard and old colleague of some of the Oxide team back at Sun and Joyent, has some great resources on the subject https://www.brendangregg.com/ebpf.html https://www.brendangregg.com/ebpf.html https://www.brendangregg.com/blog/2018-10-08/dtrace-for-linux-2018.html https://www.brendangregg.com/blog/2018-10-08/dtrace-for-linu...