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. Back in 2016, I gave a talk outlining the causes and effects of the terrible performance of web apps built using popular tools on the fastest-growing device segment: low-end to mid-range Android phones.

Performance 124

Performance Network Cache Metrics 124

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. Our engineering teams tuned their services for performance after factoring in increased resource utilization due to tracing.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

IO River

NOVEMBER 2, 2023

Delta Air Lines experienced a severe system outage in 2017, resulting in flight cancellations and delays across their network. The stakes are even higher during high-traffic periods such as Black Friday or Cyber Monday. High availability is a business imperative in this sector.

Availability 52

Availability Social Media Traffic Games 52

IO River

NOVEMBER 2, 2023

Delta Air Lines experienced a severe system outage in 2017, resulting in flight cancellations and delays across their network. The stakes are even higher during high-traffic periods such as Black Friday or Cyber Monday. High availability is a business imperative in this sector.

Availability 52

Availability Social Media Traffic Games 52

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?

Speed 126

Speed Java AWS Virtualization 126

All Things Distributed

NOVEMBER 13, 2018

Since then, AWS has added another PoP in Palermo in 2017. Lamborghini, the world-famous manufacturer of elite, luxury sports cars based in Italy, has been using AWS to reduce the cost of their infrastructure by 50 percent, while also achieving better performance and scalability. Today, their time-to-market is close to zero.

AWS 167

AWS Energy Automotive Traffic 167

Brendan Gregg

SEPTEMBER 5, 2017

Here's some output from my zfsdist tool, in bcc/BPF, which measures ZFS latency as a histogram on Linux: # zfsdist. Tracing ZFS operation latency. As a performance engineer who does kernel tracing, I find the lack of an ID I can trace in the kernel to be pretty annoying. Hit Ctrl-C to end. ^C People rarely create them manually.

Virtualization 76

Virtualization AWS Engineering Hardware 76