MrComputerScience.com
Blog For Marketing And Tech Nerds
Head-of-line blocking happens when a single slow or lost packet stalls all other data waiting behind it in a queue. HTTP/2 solved application-layer head-of-line blocking by multiplexing streams over …
Continue Reading about What Is Head-of-Line Blocking and How Does HTTP/3 Fix It? →
To tolerate f Byzantine (arbitrarily malicious) failures, a distributed consensus system needs at least 2f+1 nodes for crash faults and 3f+1 for full Byzantine faults. The math is not arbitrary: below …
Continue Reading about Why Byzantine Consensus Needs 2f+1 Nodes to Tolerate f Failures →
RISC-V's vector extension (RVV 1.0) takes a fundamentally different approach than ARM SVE or x86 AVX-512: vector length is discovered at runtime rather than fixed at compile time. This makes RVV code …
Continue Reading about RISC-V RVV 1.0 vs ARM SVE vs AVX-512 in 2026 →
Modern CPUs reorder instructions at runtime to keep execution units busy while waiting on memory or slow operations. Your code runs in program order logically, but physically the CPU may execute …
Continue Reading about Why CPUs Execute Instructions Out of Order →
False sharing happens when two CPU cores modify different variables that happen to live on the same cache line. The hardware treats the entire line as contested and forces expensive synchronization on …
Continue Reading about What Is False Sharing and Why It Kills Parallel Performance →
Calling free() does not return memory to the operating system. It returns memory to your allocator's internal free list, where it sits available for future malloc() calls within the same process. The …
Continue Reading about What Actually Happens When You Call free() in C? →
