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Kernel Requirements

Currently Pulsar requires at least kernel version 5.5 with BPF and BTF enabled.

We're requiring 5.5 because we use BPF_CORE_READ, which under the hood uses bpf_probe_read_kernel. To support older kernel versions we may use the older and generic bpf_probe_read, we are working on it.

See https://github.com/iovisor/bcc/blob/master/docs/kernel-versions.md