Performance
6 posts in category “Performance”.
GPUDirect Storage in 2025: Optimizing the End-to-End Data Path
2025-09-16How modern systems move data from NVMe and object storage into GPU kernels with minimal CPU overhead and maximal throughput.
Lock-Free Data Structures: Concurrency Without the Wait
2024-07-18Explore how lock-free algorithms achieve thread-safe data access without traditional locks. Learn the theory behind compare-and-swap, the ABA problem, memory ordering, and practical implementations that power high-performance systems.
Amdahl’s Law vs. Gustafson’s Law: What They Really Predict
2024-06-15When does parallelism pay off? Compare Amdahl’s and Gustafson’s models, see where each applies, and learn how to reason about speedups in practice.
Memory Allocators: From malloc to Modern Arena Allocators
2023-09-14A deep dive into memory allocation strategies, from the classic malloc implementations to modern arena allocators, jemalloc, tcmalloc, and custom allocators that power high-performance systems.
Garbage Collection Algorithms: From Mark-and-Sweep to ZGC
2022-11-22A comprehensive exploration of garbage collection algorithms, from classic mark-and-sweep to modern concurrent collectors like G1, Shenandoah, and ZGC. Learn how automatic memory management works and the trade-offs that shape collector design.
Branch Prediction and Speculative Execution: How Modern CPUs Gamble on the Future
2021-08-15Explore how modern processors predict branch outcomes and execute instructions speculatively, the algorithms behind branch predictors, the performance implications for your code, and the security vulnerabilities like Spectre that emerged from these optimizations.