nviennot/core-to-core-latency
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Measures the latency between CPU cores
8 mentions on Hacker News by 7 people: 2 stories, 6 comments · first 2022-09-18 · latest 2026-05-12
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Measuring CPU core-to-core latencystory by foltik · 2026-05-12 · 0 comments
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…and latency numbers for many different CPUs, as well as a benchmark you can run yourself: [0] https://github.com/nviennot/core-to-core-latency
comment by foltik · 2025-12-13 · in Java FFM zero-copy transport using io_uring -
…CPUs some cores are "closer" than others and thus cache-interactions between them are faster: https://github.com/nviennot/core-to-core-latency And if you optimize based on this you can get speedups, both at the macro level by doing things…
comment by gpm · 2025-07-28 · in SIMD within a register: How I doubled hash table lookup performance -
For other platforms there is already https://github.com/nviennot/core-to-core-latency This project works around a limitation in MacOS, namely lack of thread pinning, and makes it possible to do it without Asahi Linux, and without using…
comment by hydroreadsstuff · 2024-12-04 · in Measuring Apple CPU Core-to-Core Latency Without Core-Pinning -
…(if you have a N100/N300 and could spare a moment, you can answer this question with this tool!) https://github.com/nviennot/core-to-core-latency Similarly, Apple's e-cores are really intended for background workers in phones, not…
comment by paulmd · 2023-10-18 · in Intel Launches Intel Core 14th Gen Desktop Processors for Enthusiasts -
The project is a port of https://github.com/nviennot/core-to-core-latency from Rust to C.
comment by aportnoy · 2023-08-20 · in Show HN: Visualize core-to-core latency in ~200 lines of C and Python -
…CCX to the IOD and back, which is high 80s to 110ns latency. This example is from an aws c6a.metal. https://github.com/nviennot/core-to-core-latency#amd-epyc-7r... Intel Ice Lake (c6i.metal), being monolithic, starts way worse. Any…
comment by rektide · 2023-06-08 · in Compute Express Link CXL Latency How Much Is Added at HC34 (2022) -
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Measuring CPU core-to-core latencystory by nviennot · 2022-09-18 · 90 comments