Sdb::Analyzer

• FrameAnalyzer read frame into calling graph with latency
  • FrameReader SDB writes multiple frames in one line, FrameReader splits those lines.
  • Symbolizer
    • TimeConverter eBPF only use the bpf_ktime_get_ns, which is the time in nanoseconds since system boot, but in a program, we can only get real-world timestamp easily, the TimeConverter is used for conversion
    • SymbolsTable
      • reads symbol data
      • find iseq from address and ts(we need to consider gc move, so we need the ts)