Why is Kafka so Fast? Part 2
CFKA achieves high performance by focusing on efficiency through the zero copy principle, reducing data transfer steps from disk to network, and utilizing modern hardware optimizations like DMA.
MAIN POINTS FROM TRANSCRIPT
- CFKA emphasizes efficiency by minimizing excess data copying between disk and network.
- Zero copy reduces data transfer steps, enhancing performance.
- Modern Unix systems optimize data transfer without excessive copying.
- DMA allows data transfer without CPU involvement, increasing efficiency.
TAKEAWAYS
- Zero copy significantly reduces the number of data copies needed in CFKA.
- Using sendfile system call optimizes data transfer from OS cache to network.
- CFKA leverages sequential IO and zero copy for high performance.
- Modern hardware optimizations, like DMA, further enhance CFKA's efficiency.