FunTester
Jan 20, 2026 · Fundamentals
Why Data Movement, Not CPU Speed, Is the Real Performance Bottleneck
Most engineers blame slow CPUs for performance issues, but the true bottleneck is often data latency—from registers and caches to DRAM, NUMA nodes, disks, and networks—so understanding and minimizing data movement is key to reducing tail latency and improving system performance.
LatencyNUMASystems
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