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Master embedded Linux kernel development
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Module 7
System Performance & Scalability Analysis
1
Profiling with `perf`
Use 'perf' to profile CPU usage, cache misses, and branch mispredictions in kernel and user-space code.
2
Kernel Tracing with ftrace and trace-cmd
Use ftrace and trace-cmd to trace kernel function calls, latencies, and specific events across subsystems.
3
eBPF Architecture and Advantages
Describe the eBPF architecture and its advantages over traditional kernel tracing methods.
4
Tracing Kernel Behavior with bpftrace and BCC
Write bpftrace one-liners and use BCC tools to trace kernel behavior and analyze system performance.
Resolving Lock Contention Bottlenecks with Profiling Tools
Use profiling tools to identify a lock contention bottleneck and apply an appropriate resolution strategy.
NUMA Architecture and Optimization
Describe NUMA architecture and use NUMA-aware tools to optimize a memory-intensive workload.
Real-time Kernel Patching and Latency Analysis
Apply the PREEMPT_RT patch, build the kernel, and analyze real-time latency using cyclictest.
8
Optimizing Kernel Parameters and Task Affinity
Tune kernel parameters via sysctl and task affinity to optimize specific workload scenarios.
Previous module
PCIe Subsystem Internals
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Advanced Kernel Debugging & Tracing