Dodging A 60-Year-Old Design Flaw In Your RAM

DRAM refresh cycles introduce a ~400 nanosecond penalty every 3-4 microseconds, which is catastrophic for latency-sensitive applications like high-frequency trading. LaurieWired explores techniques to avoid this delay by maintaining data copies on independent refresh timers. Key challenges include the OS hiding physical addresses and memory controllers scrambling addresses to the underlying RAM chips, making the workaround far more complex than it initially appears.