Speed Curve

MARCH 11, 2024

After years of development and testing, Google has added Interaction to Next Paint (INP) to its trifecta of Core Web Vitals – the performance metrics that are a key ingredient in its search ranking algorithm. INP replaces First Input Delay (FID) as the Vitals responsiveness metric. This is what the INP metric assesses."

Mobile 81

Mobile Google Metrics Monitoring 81

Dynatrace

OCTOBER 4, 2021

An application programming interface (API) is a set of definitions and protocols for building and integrating application software that enables your product to communicate with other products and services. In addition, isolating a single poor-performing service among hundreds can be a challenge unless proper monitoring is in place.

Monitoring 169

Monitoring Latency Metrics Availability 169

Dynatrace

MARCH 17, 2021

OneAgent gives you all the operational and business performance metrics you need, from the front end to the back end and everything in between—cloud instances, hosts, network health, processes, and services. But what if a particular metric that’s crucial to your monitoring needs isn’t covered out of the box?

Metrics 161

Metrics Monitoring Network Technology 161

Alex Russell

MARCH 6, 2021

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. Poor performance has a compound effect on user expectations at an ecosystem level. Live by the link, die by the link.

Performance 124

Performance Network Cache Metrics 124

Dynatrace

DECEMBER 2, 2021

SLOs, together with service-level indicators (SLIs), deliver the performance promised in service-level agreements (SLAs) and other business level objectives (BLOs) while staying within error budgets. To get a better handle on this, let’s start with some definitions. But what are SLOs? What are SLAs, SLOs, SLIs, and error budgets?

Metrics 180

Metrics Best Practices DevOps Infrastructure 180

The Netflix TechBlog

JULY 26, 2021

Operational Reporting is a reporting paradigm specialized in covering high-resolution, low-latency data sets, serving detailed day-to-day activities¹ and processes of a business domain. The compaction process is needed to optimize the performance of downstream queries on the business view as well as lower costs of S3 GET OBJECT operations.

Big Data 253

Big Data Government Analytics Processing 253

CSS Wizardry

MAY 19, 2020

With more standardised FOUT/FOIT behaviour from browser vendors, to the newer font-display specification, performance—and therefore the user—seems to have been finally been put front-and-centre. On this site, in which performance is the only name of the game, I forgo web fonts entirely, opting instead to make use of the visitor’s system font.

Google 364

Google Media Latency Metrics 364

Smashing Magazine

JANUARY 11, 2021

Front-End Performance Checklist 2021. Front-End Performance Checklist 2021. This guide has been kindly supported by our friends at LogRocket , a service that combines frontend performance monitoring , session replay, and product analytics to help you build better customer experiences. LogRocket tracks key metrics, incl.

Performance 145

Performance Cache Media Metrics 145

Speed Curve

FEBRUARY 5, 2024

That performance golden rule still holds true today. However, that pesky 20% on the back end can have a big impact on downstream metrics like First Contentful Paint (FCP), Largest Contentful Paint (LCP), and any other 'loading' metric you can think of. 80% of end-user response time is spent on the front end.

Servers 57

Servers Cache Retail Benchmarking 57

Dynatrace

JULY 10, 2019

Dynatrace monitors your full stack and offers you thousands of metrics with almost zero configuration. This article we help distinguish between process metrics, external metrics and PurePaths (traces). OneAgent & application metrics. OneAgent & cloud metrics. Dynatrace news.

Java 132

Java Best Practices Metrics Azure 132

The Netflix TechBlog

FEBRUARY 9, 2021

At the highest level, the definition of the Passport is as follows: message Passport { Header header = 1; UserInfo user_info = 2 ; DeviceInfo device_info = 3 ; Integrity user_integrity = 4 ; Integrity device_integrity = 5 ; } The Header element communicates the name of the service that created the Passport.

Architecture 221

Architecture Latency Servers Website 221

Dotcom-Montior

NOVEMBER 24, 2021

By definition, a distributed system is any system that comprises of multiple components on variety of machines that work together to appear as a single, organized system. Although the definition may seem straightforward, in the real-world, a distributed system is one of the most complex environments to understand, manage, and monitor.

Systems 74

Systems Monitoring Hardware Network 74

The Morning Paper

OCTOBER 6, 2019

Model performance is not the same as business performance. Prediction serving latency matters. Lesson 2: model performance is not the same as business performance. Booking.com estimate the value delivered by a model through randomized controlled trials which measure the impact on business metrics.

Latency 102

Latency Metrics Cache Design 102

Smashing Magazine

AUGUST 10, 2023

In fact, there’s great tooling right under the hood of most browsers in DevTools that can do many things that a tried-and-true service like WebPageTest offers, complete with recommendations for improving specific metrics. Certain tools are designed for certain metrics with certain assumptions that produce certain results.

Speed 82

Speed Monitoring Testing Network 82

Dynatrace

JUNE 25, 2021

Already in the 2000s, service-oriented architectures (SOA) became popular, and operations teams discovered the need to understand how transactions traverse through all tiers and how these tiers contributed to the execution time and latency. The overall fallacy in this assumption becomes obvious when you look at the definitions of the terms.

Open Source 194

Open Source Monitoring Google Systems 194

Smashing Magazine

JANUARY 6, 2020

Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 145

Performance Cache Network Metrics 145

CSS - Tricks

MARCH 16, 2020

to run Google Lighthouse audits via the command line, save the reports they generate in JSON format and then compare them so web performance can be monitored as the website grows and develops. These are: Performance Accessibility Best Practices SEO Progressive Web App. Here’s what a full report looks like. Let’s find out how.

Google 82

Google Latency Website Metrics 82

Smashing Magazine

JANUARY 7, 2019

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 104

Performance Cache Metrics Network 104

Alex Russell

OCTOBER 22, 2017

TL;DR: performance budgets are an essential but under-appreciated part of product success and team health. Nobody is trying to do a poor job, and yet the results of a “completed” PWA project often require weeks or months of painstaking rework to deliver minimally acceptable performance. Partner meetings are illuminating.

Performance 68

Performance Benchmarking Network Mobile 68

CSS - Tricks

APRIL 1, 2021

Site performance is potentially the most important metric. The better the performance, the better chance that users stay on a page, read content, make purchases, or just about whatever they need to do. Having a slow site might leave you on page 452 of search results, regardless of any other metric. Lighthouse.

Cache 92

Cache Social Media Media Website 92

The Morning Paper

MAY 21, 2019

This boils down to a single digit µs latency toleration in the tail for far memory, and in addition to security and privacy concerns, rules out remote memory solutions. Thus we’re fundamentally trading (de)-compression latency at access time for the ability to pack more data in memory. Enter zswap!

Software 78

Software Software Google Hardware 78

Dotcom-Montior

DECEMBER 8, 2021

are all prone to performance issues and unexpected outages at some point. By ITIL definition, the service desk may take the form of incident resolution or service requests, but whatever the case, the primary goal of the service desk to provide quick and efficient service. Systems, web applications, servers, devices, etc.,

Social Media 90

Social Media Monitoring Latency DevOps 90

Testsigma

DECEMBER 12, 2020

There are a lot of ways to perform cross-browser testing but the most efficient is to go for a cloud-based tool such as Testsigma. How To Perform Cross-Browser Testing on Every Combination? This kind of approach is although a victim of latency and delayed execution.

Testing 53

Testing Operating System Website Latency 53

John McCalpin

JULY 23, 2018

This allows you to use the RDPMC instruction to read the logical processor’s fixed-function performance counters. This partial ordering can help expose the execution time of long-latency instructions (such as memory accesses or mispredicted branches) that occur shortly before the final value of the TSC is read using RDTSCP.

Code 45

Code Programming Latency Testing 45

Alex Russell

JULY 14, 2021

Engine diversity is essential, as it is the mechanism that causes competition to deliver better performance, capability, privacy, security, and user controls. This reduces friction and commensurately increases "engagement" metrics. [6]. More on that when we get to iOS. "What, then, is a 'browser'?" " you might ask?

Google 121

Google Mobile Engineering Internet 121

Smashing Magazine

AUGUST 22, 2021

HTTP/3: Performance Improvements (Part 2). HTTP/3: Performance Improvements (Part 2). In this second part, we will zoom in on the performance improvements that QUIC and HTTP/3 bring to the table for web-page loading. HTTP/3 performance features ( current article ). Two-way latency is often called round-trip time (RTT).

Performance 107

Performance Network Latency Servers 107

SQL Server According to Bob

JANUARY 11, 2020

This will help you increase system performance and avoid I/O environment errors. Atomicity A transaction must be an atomic unit of work; either all of its data modifications are performed or none of them are performed. Different implementations can have profound effects on SQL Server performance.

Servers 40

Servers Cache Media Hardware 40

All Things Distributed

JULY 20, 2015

This architecture affords Amazon ECS high availability, low latency, and high throughput because the data store is never pessimistically locked. task definition). As you can see, the latency remains relatively jitter-free despite large fluctuations in the cluster size. Remind saw large performance increases (e.g.,

Latency 166

Latency Architecture AWS Open Source 166

Smashing Magazine

AUGUST 9, 2021

You’ve probably heard things like: “HTTP/3 is much faster than HTTP/2 when there is packet loss”, or “HTTP/3 connections have less latency and take less time to set up”, and probably “HTTP/3 can send data more quickly and can send more resources in parallel”. HTTP/3 performance features ( coming up soon! ).

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

SEPTEMBER 6, 2021

If after the previous two parts — HTTP/3 history and core concepts and HTTP/3 performance features — you’re convinced that starting to use the new protocols is a good idea (and you should be!), HTTP/3 performance features. Finally, not inlining resources has an added latency cost because the file needs to be requested.

Network 107

Network Servers Cache Traffic 107