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Filtered by: latency Clear Filter

Cache Benchmarks

news.ycombinator.com Unknown 2025-07-25 12:15:31

Cache Benchmarks These benchmarks measure thoughput, latency, and CPU cycles for Memcache, Redis, Valkey, Dragonfly, and Garnet. Persistance is turned off for all caches, no disk operations. All connections are local, UNIX named pipes. The hardware is an AWS c8g.8xlarge (32 core non-NUMA ARM64). The benchmarking tool is memtier_benchmark. Includes pipelining for 1, 10, 25, and 50. Each benchmark has 31 runs. About 15K total runs. The median of the 31 is used for graphing. Latency is mea

Topics: 99 99th 9th latency percentile
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On latency, measurement, and optimization in algorithmic trading systems

news.ycombinator.com Unknown 2025-08-07 22:10:59

"The speed of light sucks." - John Carmack ‍ Software engineers within the world of low-latency automated trading (colloquially known as "high-frequency trading" or HFT) obsess over speed. From purchasing private bandwidth between microwave towers to analyzing x86 instructions from different compiler versions, those with experience in this industry have seen colossal time and expense committed to the problem of optimizing code and network paths for minimal execution times. But how does one

Topics: exchange latency order self time
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Benchmarking Postgres

news.ycombinator.com Unknown 2025-08-20 01:31:02

Want to learn more about unlimited IOPS w/ Metal, Vitess, horizontal sharding, or Enterprise options? Benchmarking Postgres By Benjamin Dicken | July 1, 2025 Today we launched PlanetScale for Postgres. For the past several months, we've been laser focused on building the best Postgres experience on the planet, performance included. To ensure we met our high standard for database performance, we needed a way to measure and compare other options with a standardized, repeatable, and fair method

Topics: benchmark database latency planetscale postgres
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Bandwidth vs. Latency: We Chatted With an Internet Connectivity Expert to Understand the Difference

cnet.com See Full Bio 2025-09-03 08:45:00

Having fast, reliable home internet is essential these days for work, school, streaming and browsing. But understanding how much speed you need, or even what "internet speed" even means, can be a daunting task. Bandwidth and latency are two key factors that affect how we perceive the speed of our internet connection. But while you may hear them used together quite often, these two terms have distinct meanings. Understanding what they are and the difference between them can help you troubleshoot

Topics: bandwidth connection internet latency speed
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