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Thank you for this. I know what I'm reading for the next two months! In your original post, you mention one of the goals being able to contribute a patch to a

• oskarth 11y ago
  Glad it was useful and motivating! This one I feel a bit bad about, because I wanted to write a patch and test that hypothesis, but I didn't (yet) make the time for it. I feel like I could after maybe ~30h (really I don't have enough information to determine beyond it probably being between 10 and 100 hours) of focused effort. I did read a bunch of The Design and Implementation of FreeBSD and I felt like I could understand it reasonably well, using the mental models I picked up studying xv6. The reasons why I didn't do it (yet) are interesting in themselves. There was nothing in particular that I felt was missing from FreeBSD, and I hadn't used the "advanced" parts of the OS enough to run into any bugs. Because of this I think I lacked a sense of ownership, and the artificiality of a bug hunting activity caught up to me, motivation-wise. To do this I think you need to be motivated to dive into the nitty-gritty of a particular part of the OS, in addition to having a good understanding of the OS as a whole. Instead I ended up exploring some of the more advanced parts of FreeBSD (Jails and ZFS) with http://experiments.oskarth.com/netpowder/ http://experiments.oskarth.com/netpowder/ - hopefully I will find something useful that I want to either extend or a bug I want to fix, or perhaps I get to test the hypothesis with something completely different (such as Mirage OS).