Dynatrace

FEBRUARY 2, 2022

service availability with <50ms latency for an application with no revenue impact. The power to automatically stop bad code in its tracks through an intelligent, data-driven approach is significant for development teams that are constantly constrained by manual processes, yet asked to deliver higher quality software at speed.

DevOps 196

DevOps Metrics Best Practices Latency 196

CSS Wizardry

MAY 19, 2020

Thus, on a 3G connection, it takes over nine seconds to download each file. On a high-latency connection, this spells bad news. However, the execution of this header is bound by the response’s TTFB, which on high-latency networks can be very, very high. Put another-other way, this file is latency-bound, not bandwidth-bound.

Google 364

Google Media Latency Metrics 364

Dynatrace

JANUARY 18, 2023

This drive for speed has a cost: 22% of leaders admit they’re under so much pressure to innovate faster that they must sacrifice code quality. In addition, 27% of IT and DevOps teams’ time is invested in manual CI/CD tasks such as detecting code quality issues, which reduces time spent on innovation. What is DevOps?

DevOps 198

DevOps Best Practices Innovation Strategy 198

Adrian Cockcroft

JANUARY 29, 2023

The mean and percentile measurements hide this structure, but the rest of this post will show how the structure can be measured and analyzed so that you can figure out a useful model of your system, understand what is driving the long tail of latencies and come up with better SLAs and measures of capacity.

Lambda 98

Lambda Latency Cache Traffic 98

CSS - Tricks

DECEMBER 14, 2020

Here’s what the report has to say about the CSS they scanned: While JavaScript far surpasses CSS in its share of page weight, CSS has certainly grown in size over the years, with the median desktop page loading 62 KB of CSS code, and 1 in 10 pages loading more than 240 KB of CSS code. Direct Link to Article — Permalink.

Latency 98

Latency Mobile Website Speed 98

CSS - Tricks

APRIL 1, 2021

seconds faster on average and it drove 60 million more Firefox downloads per year. The code for the site is available on GitHub for reference. Redirects are often pretty light in terms of the latency that they add to a website, but they are an easy first thing to check, and they can generally be removed with little effort.

Cache 92

Cache Social Media Media Website 92

The Morning Paper

JANUARY 30, 2020

Edge servers are the middle ground – more compute power than a mobile device, but with latency of just a few ms. Wasm functions contain native codes compiled at runtime, so they should not be directly migrated as normal JavaScript objects. Why would we want to live migrate web workers? The opencv app has the largest state (4.6

Mobile 104

Mobile Cloud Latency Games 104

Smashing Magazine

AUGUST 3, 2023

Download Time of HTML This is the time it takes to download the page’s HTML file. You need to beware of large HTML files or slow network connections because they can lead to longer download times. Fetching And Decoding Images This is the time taken to fetch, download, and decode images, particularly the largest contentful image.

Performance 74

Performance Cache Traffic Metrics 74

Smashing Magazine

SEPTEMBER 28, 2022

Every unnecessary bit of JavaScript code you bundle and serve will be more code the client has to load and process. The resource loading waterfall is a cascade of files downloaded from the network server to the client to load your website from start to finish. It is important to note how much data the client needs to download.

Cache 127

Cache Performance Servers Social Media 127

The Morning Paper

NOVEMBER 8, 2020

Before we dive into this paper, if you click on the link above and then download and open up the paper pdf you might notice the familiar red/orange splash of USENIX, and appreciate the fully open access. For Facebook’s Delos, reconfiguration latencies of 10s of ms are ok. Virtual consensus in Delos , Balakrishnan et al.

Virtualization 126

Virtualization Latency Storage Systems 126

Smashing Magazine

MARCH 25, 2021

Also, if you are not using a content delivery network (CDN) or multiple CDNs to map users to the closest edge regions for reduced latencies — a practice called suboptimal routing — you might slow down the start of the video. That way, you can eliminate unnecessary downloads and accelerate page loads. Wrapping Up.

Media 118

Media Performance Mobile Latency 118

Smashing Magazine

MAY 16, 2022

Examples of non-timing information you could send: HTTP Response status code, regions, request ids, etc. This is how they offer drop-in monitoring of all requests being made without us needing to change our code to monitor a request. For example, we almost always trigger image downloads by putting an img element in our HTML.

Servers 94

Servers Monitoring Cache Network 94

Dotcom-Montior

MARCH 6, 2022

Waterfall charts are diagrams which represent how website resources are being downloaded, parsed by the engine, in a timeline that gives us the opportunity to see the sequence and dependencies between resources. The time it takes to download files. It assists in identifying where important events happened during the loading process.

Performance 52

Performance Cache Website Speed 52

Smashing Magazine

JANUARY 11, 2021

Have we optimized enough with tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, progressive hydration, clients hints, HTTP/3, service workers and — oh my — edge workers? Download The Checklist (PDF, Apple Pages, MS Word). Quick Wins. Happy optimizing, everyone!).

Performance 145

Performance Cache Media Metrics 145

Percona

JANUARY 24, 2023

Individual processes generate WAL records, and latency is very crucial for transactions. This warning may mainly apply to users building their PostgreSQL from source code. Download Percona Distribution for PostgreSQL Today!

Database 117

Database Benchmarking Open Source Latency 117

John McCalpin

APRIL 2, 2020

All of the SPECfp_rate2000 results were downloaded from www.spec.org, the results were sorted by processor type, and “peak floating-point operations per cycle” was manually added for each processor type. In these tests, we did not have the same ability to vary memory latency that I had with the 2007 Opteron systems.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

Dotcom-Montior

MAY 6, 2020

Waterfall charts are diagrams which represent how website resources are being downloaded, parsed by the engine, in a timeline that gives us the opportunity to see the sequence and dependencies between resources. The time it takes to download files. It assists in identifying where important events happened during the loading process.

Performance 53

Performance Cache Website Speed 53

Smashing Magazine

JANUARY 6, 2020

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? Download The Checklist (PDF, Apple Pages, MS Word). Assets Optimizations. Build Optimizations. Quick Wins.

Performance 145

Performance Cache Network Metrics 145

Rigor

JULY 2, 2019

As an example, we see that the preferred address to access the online edition of the New York Times is [link] (we received an HTTP response code of 200 when requesting the site). Rigor’s waterfall chart indicates that this address has been permanently moved (given that we received an HTTP response code of 301 ).

Mobile 60

Mobile Traffic Google Latency 60

Smashing Magazine

AUGUST 3, 2021

Different browsers running on different platforms and hardware, respecting our user preferences and browsing modes (Safari Reader/ assistive technologies), being served to geo-locations with varying latency and intermittency increase the likeness of something not working as intended. More after jump! Large preview ).

Network 145

Network Engineering Availability Monitoring 145

Scalegrid

JUNE 18, 2019

First, find and copy your MongoDB connection string from the cluster details page on the ScaleGrid console: The CA certificate file is also available for download from the cluster details page. ok RS-example-0:SECONDARY> Here are the relevant parts of our test code: require 'mongo'. servers.mongodirector.com:27017/test?

C++ 100

C++ Servers Database Network 100

Smashing Magazine

JANUARY 7, 2019

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? Download The Checklist (PDF, Apple Pages, MS Word). Assets Optimizations. Build Optimizations. Quick Wins.

Performance 104

Performance Cache Metrics Network 104

Smashing Magazine

APRIL 17, 2019

This typically happens once per server and takes up valuable time — especially if the server is very distant from the browser and network latency is high. Get it wrong, and you’ve wasted time and resources in downloading something that isn’t going to be used. This is where globally distributed CDNs really help!)

Performance 106

Performance Games Servers Cache 106

CSS - Tricks

MARCH 16, 2020

Along with other general diagnostics and web performance metrics, a really useful feature of the report is that each of the key areas is aggregated into color-coded scores between 0-100. I use the Homebrew package manager, but you can also download an installer straight from the Node.js Here’s what a full report looks like.

Google 82

Google Latency Website Metrics 82

Alex Russell

JANUARY 30, 2024

Most sites, even those that aspire to be "lived in", feature short median sessions, which means we can't actually justify much in the way of up-front code, and first impressions always matter. It's cheeky, but a weighted average of the P75 of download speeds (3/4ths of all connections are faster) should get us in the ballpark.

Performance 90

Performance Network Mobile Speed 90

Testsigma

JANUARY 30, 2021

Applications that do not require to be downloaded and can be accessed via hitting the URL on a mobile browser are known as mobile web applications. The applications are designed using the same code base as Desktop like HTML, Javascript, and CSS. What are Mobile Web Applications? Hence, Mobile web applications are secure to use as well.

Mobile 52

Mobile Testing Website Internet 52

HammerDB

MAY 5, 2019

However in the Skylake microarchitecture (you can see a list of CPUs here ) the PAUSE instruction changed and in the documentation it says “the latency of the PAUSE instruction in prior generation microarchitectures is about 10 cycles, whereas in Skylake microarchitecture it has been extended to as many as 140 cycles.”

Testing 48

Testing Tuning Latency Storage 48

CSS - Tricks

JULY 25, 2019

Estimated Input Latency. Estimated Input Latency. Where possible, remove unused JavaScript code or focus on only delivering a script that will be run by the current page. It’s important to remember that the cost of JavaScript is not only the time it takes to download it. They are: Time to Interactive ( TTI ). Speed Index.

Google 71

Google Engineering Speed Mobile 71

High Scalability

MARCH 1, 2019

It was made possible by using a low latency of 0.1 seconds, the lower the latency, the more responsive the robot. It has 39 mostly 5 star reviews. They'll learn a lot and love you forever. They'll learn a lot and love you forever. AWSonAir : @McDonalds uses Amazon ECS to scale to support 20,000 orders per second.

Internet 33

Internet Internet Scalability Blockchain 33

KeyCDN

SEPTEMBER 12, 2019

The main reason is because it decreases the latency to the user where they are located by serving your images from a POP physically closest to them. We ran some image CDN tests and the results were that the total download times on our image assets with a CDN enabled decreased by 65% on average!

Social Media 106

Social Media Media Google Website 106

The Netflix TechBlog

JUNE 13, 2023

By collecting and analyzing key performance metrics of the service over time, we can assess the impact of the new changes and determine if they meet the availability, latency, and performance requirements. We can determine A/B test membership in either device application or backend code and selectively invoke new code paths and services.

Traffic 279

Traffic Metrics Systems Strategy 279

Alex Russell

OCTOBER 22, 2017

For this page to be done loading it needs to be responsive to user input — the “interactive” in “Time to Interactive” Browsers process user input by generating DOM events that application code listens to. Simulated packet loss and variable latency, however, can make benchmarking extremely difficult and slow.

Performance 68

Performance Benchmarking Network Mobile 68

Alex Russell

APRIL 29, 2021

After 20 years of neck-in-neck competition, often starting from common code lineages, there just isn't that much left to wring out of the system. For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. Spurious reports of "10x worse" performance merit intense scepticism.

Media 145

Media Games Education Engineering 145

SQL Performance

SEPTEMBER 17, 2019

For years SSRS was bundled with the installation of SQL Server, which helped add to some of the confusion around licensing and support for the product, so beginning with SSRS 2017, the installation package for Reporting Services is a separate download. Disk latency for ReportServer and ReportServerTempDB are very important.

Tuning 67

Tuning Servers Database Best Practices 67

Smashing Magazine

MAY 20, 2020

It’s happening because of new features being added and the fact that we sometimes don’t have a second thought on packages that we constantly add and update, or think about the complexity of our code. In the case that new development changes the file size to the point of exceeding the defined limit, the script will complete with non-zero code.

Performance 99

Performance Metrics Best Practices Code 99

Percona

JULY 1, 2023

Download our eBook, “ Enterprise Guide to Cloud Databases ” to help you make more informed decisions and avoid costly mistakes as you develop and execute your cloud strategy. Download Now What is Amazon Aurora? What we should really compare is the MySQL and Aurora database engines provided by Amazon RDS.

AWS 52

AWS Database Serverless Storage 52

Alex Russell

JULY 14, 2021

Because they lean on the system-provided WebView component, they do not need to pay the expense of a heavier app download to support rendering HTML, running JavaScript, decoding images, or loading network resources. However, producing a complete and competitive WebView-based browser requires additional UI and glue code.

Google 121

Google Mobile Engineering Internet 121