parca-agent

We write quite a bit of BPF at work for the Parca-Agent project[1]. And we find that even C is sometimes too high level of a language paired with modern optimization techniques as the code you write often doesn’t come out that way the other and and we have to resort to weird hacks or write assembly directly to appease the verifier. Apart from that, the usual qualms one might have about C are not really relevant in eBPF land, so I’ve actually found it the nicest experience writing C I’ve ever had, the verifier is just the price we have to pay. [1] https://github.com/parca-dev/parca-agent