Brendan Gregg
SEPTEMBER 25, 2021
A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. I love short benchmarks like this as I can disassemble the resulting binary and ensure that the compiled instructions match my expectations, and the compiler hasen't messed with it. ## 6. include <sys/time.h>
The Netflix TechBlog
OCTOBER 19, 2020
If we had an ID for each streaming session then distributed tracing could easily reconstruct session failure by providing service topology, retry and error tags, and latency measurements for all service calls. Using simple lookup indices in Cassandra gives us the ability to maintain acceptable read latencies while doing heavy writes.
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Alex Russell
MARCH 6, 2021
TL;DR: A lot has changed since 2017 when we last estimated a global baseline resource per-page resource budget of 130-170KiB. To update our global baseline from 2017, we want to update our priors on a few dimensions: The evolved device landscape. The Moto G4 , for example. Here begins our 2021 adventure. Hard Reset.
The Morning Paper
NOVEMBER 8, 2020
Back in 2017 the engineering team at Facebook had a problem. The initial version of Delos went into production after eight months using a ZooKeeper-backed Loglet implementation, and then four months later it was swapped out for a new custom-built NativeLoglet that gave a 10x improvement in end-to-end latency. Every little helps!
Alex Russell
JANUARY 30, 2024
If you or your company are able to generate a credible worldwide latency estimate in the higher percentiles for next year's update, please get in touch. So what did $650, give or take, buy in late 2017 or early 2018? But it won't be based on the sort of numbers that folks explicitly running speed tests see; those aren't real life.
Brendan Gregg
SEPTEMBER 25, 2021
A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. I love short benchmarks like this as I can disassemble the resulting binary and ensure that the compiled instructions match my expectations, and the compiler hasen't messed with it. ## 7. include <sys/time.h>
SQL Performance
APRIL 8, 2019
Back on December 5, 2017, Microsoft announced that they were using AMD EPYC 7551 processors in their storage-optimized Lv2-Series virtual machines. I wrote about using CPU-Z to benchmark the Intel Xeon E5-2673 v3 processor in an Azure VM in this article. Figure 1: CPU-Z Benchmark Results for LS16v2. Memory (GiB).
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