Rigor

NOVEMBER 22, 2019

According to Tim Kadlec : A performance budget is a clearly defined limit on one or more performance metrics that the team agrees not to exceed and that is used to guide design and development. They create a good starting point to talk about a full website or individual page or section from a performance and design perspective.

Performance 45

Performance Metrics Website Speed 45

Speed Curve

DECEMBER 10, 2017

Network metrics have been around for decades, but rendering metrics are newer. The gating factor in web performance ten years ago was network. Hopefully you went through the exercise of picking which rendering metric best corresponds to what you feel is a "good UX". Speed Index. Start Render. Time to First Interactive.

Metrics 69

Metrics Website Speed Monitoring 69

Dynatrace

MAY 15, 2020

How to assess an environment’s security posture, risk and threat profile, and possible attack vectors, where perhaps you didn’t code the application or build the infrastructure, and where new code is deployed frequently, and the infrastructure is constantly changing? And this poses a significant risk.

Government 225

Government DevOps Infrastructure Network 225

Smashing Magazine

AUGUST 19, 2021

Ethics are an important part of human-computer interaction because they keep people at the heart of the design process. It all starts with a Code of Ethics. “I Outcomes of a code of ethics affect almost every aspect of your user research practice, from processes to templates and team environment. Devin Harold. Large preview ).

Code 137

Code Design Education Government 137

CSS Wizardry

NOVEMBER 3, 2020

The whole point of the exercise that follows is to allow me to move quickly, spotting patterns from afar, and not having to do any slow or meticulous work yet. I want to be able to form hypotheses and draw conclusions without viewing a single URL or a line of source code. That work is what comes next. Final Word.

Speed 292

Speed Ecommerce Metrics Analytics 292

Dynatrace

APRIL 21, 2022

The Azure Well-Architected Framework is a set of guiding tenets organizations can use to evaluate architecture and implement designs that will scale over time. Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host.

Azure 188

Azure Monitoring Virtualization Metrics 188

The Netflix TechBlog

DECEMBER 23, 2020

In addition to the default Docker namespaces (mount, network, UTS, IPC, and PID), we employ user namespaces for added layers of isolation. Let’s go back to that kernel code example earlier. This, in turn, allows processes to exercise certain privileges without having any privileges in the init user namespace. User Namespaces.

Media 286

Media Metrics Systems Processing 286

CSS - Tricks

APRIL 1, 2021

With all of this in mind, I thought improving the speed of my own version of a slow site would be a fun exercise. The code for the site is available on GitHub for reference. Using a network request inspector, I’m going to see if there’s anything we can remove via the Network panel in DevTools.

Cache 92

Cache Social Media Media Website 92

Percona

AUGUST 30, 2023

If a PostgreSQL user wants to change these values, they need to recompile the PostgreSQL from the source code. This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. For example, the network port at which PostgreSQL listens cannot be changed at the individual database level.

Database 108

Database Servers Open Source Tuning 108

Testsigma

JANUARY 6, 2022

Today, when people are working from home, they are using personal or company-provided laptops to connect to the office network. Mostly we are using a virtual desktop to stay connected to the organization’s network. Any technical glitch such as a network bandwidth issue can impact the output of the whole organization. Signup now.

Testing 52

Testing Internet Internet Testing Tools 52

Dynatrace

JUNE 1, 2021

However, with today’s highly connected digital world, monitoring use cases expand to the services, processes, hosts, logs, networks, and of course, end-users that access these applications — including a company’s customers and employees. Mobile apps, websites, and business applications are typical use cases for monitoring.

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Another problem is that a design control, intended to mitigate a failure mode, may not work as intended. STPA is based on a functional control diagram of the system, and the safety constraints and requirements for each component in the design.

Latency 52

Latency Engineering Systems Hardware 52

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Another problem is that a design control, intended to mitigate a failure mode, may not work as intended. STPA is based on a functional control diagram of the system, and the safety constraints and requirements for each component in the design.

Latency 53

Latency Engineering Systems Hardware 53

The Morning Paper

DECEMBER 8, 2019

Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. Traditionally one of the major costs when moving data in and out of memory (be it to persistent media or over the network) is serialisation.

Hardware 56

Hardware Programming Media Storage 56

John McCalpin

AUGUST 1, 2018

Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? Interacting components in the execution of an MPI job — a brief outline (from memory): The user source code, which contains an ordered set of calls to MPI routines.

Hardware 40

Hardware Transportation Performance Latency 40

Alex Russell

AUGUST 30, 2021

Anyone who cares to download and fork the code can do so. " The eventual Blink fork was precipitated by an insurmountable difficulty in doing precisely what Apple suggested to Congress: contributing code upstream to WebKit to enable new features. It's worth assessing these claims from most easily falsified to most contested.

Engineering 98

Engineering Open Source Website Operating System 98

The Morning Paper

APRIL 16, 2019

The networking model is asynchronous (allowing out of order, dropped, delayed, and duplicated messages), the failure model is crash-stop. We would like students to consider the performance characteristics of their systems, and our tests check that their designs attain reasonable run-time performance. Testing and model checking.

Systems 43

Systems Efficiency Testing Strategy 43

Alex Russell

SEPTEMBER 20, 2020

Circa '07, those web apps were notably slower than native code could be. Sandboxing is now universal (tho quality may differ) and we collectively got savvy about running code quickly while retaining memory safety. The nuances of careful security design are common casualties in FUD-slinging fights.

Hardware 64

Hardware Mobile Programming Java 64

The Netflix TechBlog

MARCH 6, 2019

Video encoding is what MezzFS was originally designed for and remains one of its canonical use cases, so we’ll focus on video encoding to describe the problem that MezzFS solves. We parallelize rerun jobs with Titus , Netflix’s container management platform, which allows us to exercise many hundreds of replay files in minutes.

Media 214

Media Storage Processing Cache 214