https://blog.turboawesome.win/tags/cpu/ Recent content in Cpu on Bits, Trades & Systems Hugo en-us Wed, 17 Aug 2022 10:03:00 +0000 https://blog.turboawesome.win/2022/08/memory-layout-in-go-structs-alignment-and-cache-performance/ Wed, 17 Aug 2022 10:03:00 +0000 https://blog.turboawesome.win/2022/08/memory-layout-in-go-structs-alignment-and-cache-performance/ Go's struct layout follows alignment rules that affect both memory consumption and cache performance. Understanding them matters more than most Go developers realise. https://blog.turboawesome.win/2014/05/busy-spinning-vs-blocking-thread-strategies-for-ultra-low-latency/ Wed, 14 May 2014 10:31:00 +0000 https://blog.turboawesome.win/2014/05/busy-spinning-vs-blocking-thread-strategies-for-ultra-low-latency/ Blocking a thread hands control to the OS scheduler and costs you microseconds on wake-up. Busy spinning wastes a CPU core. The right choice depends on your latency target and hardware budget. https://blog.turboawesome.win/2012/12/mechanical-sympathy-writing-java-that-respects-the-hardware/ Tue, 04 Dec 2012 10:42:00 +0000 https://blog.turboawesome.win/2012/12/mechanical-sympathy-writing-java-that-respects-the-hardware/ Martin Thompson's term 'mechanical sympathy' reframed how I think about software performance. Here's what it means in practice when writing Java for latency-sensitive systems.