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I think the title of this post should be the actual title from the linked page, "LTTng: an open source tracing framework for Linux". The current title ("LTTng: An open-source alternative to eBPF") seems to imply that eBPF is not open source, which is not correct.

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Agreed, it's very confusing. Although I don't have any experience with it, I know what eBPF is. And when I saw the title, my first thought was "how could it not be open source?"

eBPF also does more than just tracing: it allows one to implement custom network and security policies and various other things. I don’t think LTTng does anything but tracing.

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