[brendangregg]

Sad but not surprising. When we created illumos in 2010, the latest version of Linux was 2.6.35, and it did not have an answer to ZFS, DTrace, or Zones. I thought these features were important enough to compete with Linux, and convince people to switch.

Times have changed, and Linux (now at 4.10) now does have an answer to each of these, particularly:

- ZFS: ZFS on Linux, now part of Ubuntu. btrfs has been coming along as well, and I included a couple of btrfs performance analysis screenshots in my DockerCon talk last week, since we're testing it.

- DTrace: enhanced BPF now provides the raw features (as of Linux 4.9), and is merged in the Linux kernel (unlike SystemTap etc).

If illumos were proposed today, I would not get behind it as I no longer think it makes sense when you're comparing it to Linux 4.10. It's no longer 2010.

Good luck to everyone moving on. I've published a lot on debugging and tracing on Linux, which should be helpful.