Kernel Bypass Ring Buffer Polling - Quant Developer Interview Question
Difficulty: Hard
Category: systems
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Topics: systems, low-latency, c++, hft
Problem Description
Kernel bypass technologies like Solarflare's EF_VI or DPDK reduce network latency in high-frequency trading by allowing the Network Interface Card (NIC) to write packets directly into user-space memory via DMA. To synchronize the hardware producer and software consumer without expensive locking mechanisms, a generation bit protocol is often employed within a circular ring buffer. This ensures data consistency and maximizes throughput in latency-sensitive financial applications.
Task
Implement t
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