#Low Latency

A deep Linux kernel systems guide to memory architecture: how multi-level page tables and TLB misses degrade performance, how Transparent Huge Pages (THP) and hugetlbfs expand TLB coverage, why THP compaction causes latency spikes in Redis/Postgres, and how to eliminate TLB shootdowns with zero-copy I/O.

A deep runtime systems guide to Just-In-Time (JIT) compilers: how V8 TurboFan, JVM HotSpot, and LuaJIT achieve near-C performance in dynamic languages using speculative optimization, inline caching (monomorphic/polymorphic), escape analysis, on-stack replacement (OSR), and Sea-of-Nodes intermediate representations.

A deep systems engineering guide to zero-copy data formats: how FlatBuffers, Cap'n Proto, and Apache Arrow eliminate serialization and deserialization overhead using relative pointer offsets, vtables, memory-mapped I/O, and columnar in-place memory layouts.

A deep systems engineering guide to mechanical sympathy and lock-free concurrency: how the LMAX Disruptor pattern eliminates thread contention, cache line false sharing, and context switching to achieve tens of millions of operations per second with sub-microsecond tail latencies.