[Verse 1] When your kernel crashes hard and leaves no trace behind KGDB becomes your surgical tool of choice Connect the debugger through your serial line Set breakpoints deep where hardware meets the code Examine registers while the system's frozen cold Step through instructions with precision and control [Chorus] Kernel traces tell the story, system calls reveal the truth Profiling shows the bottlenecks hiding in the booth KGDB for the deep dive, ftrace for the flow Performance counters counting what you need to know Debug the metal meeting code, diagnose what's running slow [Verse 2] Function tracer captures every kernel dance While perf records samples of your CPU's stance Stack traces paint the call chain crystal clear IRQ handlers firing when interrupts appear Memory barriers keeping order in the race Context switches juggling every process space [Chorus] Kernel traces tell the story, system calls reveal the truth Profiling shows the bottlenecks hiding in the booth KGDB for the deep dive, ftrace for the flow Performance counters counting what you need to know Debug the metal meeting code, diagnose what's running slow [Bridge] Hardware counters whisper secrets from below Cache misses, branch predictions, watch the numbers grow DMA coherency issues make your data strange Driver spinlocks spinning in an endless range Interrupt storms flooding through your system's veins Power management dancing with performance gains [Verse 3] Trace events mark the moments when things go wrong Kprobes insert your hooks without breaking the song Static tracepoints scattered through the kernel core Dynamic probes can hook anywhere you need to explore Correlate the timings with your hardware clocks Find where metal interfaces cause system blocks [Chorus] Kernel traces tell the story, system calls reveal the truth Profiling shows the bottlenecks hiding in the booth KGDB for the deep dive, ftrace for the flow Performance counters counting what you need to know Debug the metal meeting code, diagnose what's running slow [Outro] From silicon to syscalls, trace the execution thread Performance tells the tale of where your cycles fled
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