article thumbnail

The Speed of Time

Brendan Gregg

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. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? How long does it take to read the time?

Speed 126
article thumbnail

The Speed of Time

Brendan Gregg

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. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? How long does it take to read the time?

Speed 40
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Trending Sources

article thumbnail

Part 1: How Dynatrace and GitHub help you deliver better software faster

Dynatrace

Since Kubernetes emerged in 2014, it has become a popular solution for scaling, managing, and automating the deployments of containerized applications in distributed environments. Keeping business stakeholders in the loop with end-to-end observability with deep insight and continuous feedback loops?. #2 2 Confidence: .

Software 246
article thumbnail

Finding Distinct Values Quickly

SQL Performance

Back in 2014, I wrote an article called Performance Tuning the Whole Query Plan. This machine has four i7 CPUs (hyperthreaded to 8) with a base speed of 2.4GHz. Having a wide range of tools available is generally speaking a good thing when tuning queries. Test Environment. The cost threshold for parallelism is set to 50.

Servers 86
article thumbnail

Advent Calendars For Web Designers And Developers (December 2021 Edition)

Smashing Magazine

Stay tuned for lots of articles on metaprogramming, applications, useful Raku modules, programming techniques, guides on how to work with Raku inside containers, and even how to migrate from good ol’ Perl. Good ol’ PerfPlanet is back for another season with all things speed and web performance. Jump to table of contents ?. Lean UXMas.

Design 108
article thumbnail

Common SQL Server Mishaps

SQL Performance

For SQL Server 2008R – 2014, you could lower this threshold using trace flag 2371. While hardware such as intelligent SANs, Solid State Disk, and other advancements have helped speed things up, wasted space in index can translate to wasted space in the buffer pool as well as wasting more I/O. That can take a long time on larger tables.

Servers 49
article thumbnail

World’s Top Web Performance Leaders To Watch

Rigor

list of those who are making a significant impact on speeding up the web today. Developers representing hundreds of companies work together at these meetups to become masters in performance metrics and the latest trends in measuring site speed.) We at Rigor respect many web performance leaders around the world. Rachel Andrew.