Brendan Gregg

FEBRUARY 28, 2023

## References I've reproduced the references from my SREcon22 keynote below, so you can click on links: - [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] Jul 2008 - [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] 2010 - [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency?

Performance 103

Performance Latency Cache Virtualization 103

Smashing Magazine

APRIL 17, 2019

The browser caches the results of these lookups, but they can be slow. This enables the browser to get ahead of the game and do more work in parallel, decreasing the overall load time. You might think of a prefetch as being a bit like adding a file to the browser’s cache. When Should I Use dns-prefetch ? The as Attribute.

Performance 109

Performance Servers Games Cache 109

Smashing Magazine

NOVEMBER 17, 2022

Web performance refers to the speed at which a website loads, how fast it’s downloaded, and how an app is displayed on the user’s browser. Clearly, we want to give freedom to our content creators, but we can leave to chance neither the resolution nor the speed of delivery and download of the images that will be displayed on our website.

Media 125

Media Cache Website Mobile 125

Smashing Magazine

NOVEMBER 2, 2021

This also implies that you don’t have to spend additional time and money on creating a PWA to suit various devices, greatly speeding up time-to-market. Therefore, we can conclude that it is reasonable to raise your store’s game by optimizing it for m-commerce. Why is that? Read point 2. More after jump! Large preview ).

Code 90

Code Cache Mobile Retail 90

Alex Russell

DECEMBER 18, 2022

We're burning our inheritance and polluting the ecosystem on shockingly thin, perniciously marketed claims of "speed" and "agility" and "better UX" that have not panned out at all. Speeds will be much slower than advertised in many areas , particularly for rural users. 4GiB of RAM.

Performance 120

Performance Mobile Network Latency 120

Smashing Magazine

AUGUST 20, 2021

Thanks to the build speed of static site generators like Hugo and modern Jamstack CMSs designed to handle vast amounts of content, even prominent blogs like Smashing Magazine , web.dev , and JFK International Air Terminal can take advantage of a Jamstack approach. Large scale blogs. Jamstack sites are static. They live in a repository.

Ecommerce 142

Ecommerce Website Government Internet 142

Smashing Magazine

JUNE 1, 2022

For example, users can install browser plugins to suggest coupon codes when they are shopping, to scan web pages for malware, to play games or message friends, or do any number of other things. The most popular, by far, is the Google Lighthouse report (available in Chrome Developer Tools) and Google’s Page Speed Insights.

Website 138

Website Design Network Testing 138

Brendan Gregg

FEBRUARY 28, 2023

References I've reproduced the references from my SREcon22 keynote below, so you can click on links: [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] , Jul 2008 [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] , 2010 [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency?

Performance 52

Performance Latency Cache Virtualization 52

IO River

NOVEMBER 2, 2023

‍A CDN, or Content Delivery Network, is a network of servers strategically positioned across various locations to expedite content delivery to users based on their geographic location.These patterns split into two main forms of traffic:Static Traffic: When a user request targets static content, the CDN first checks its cache.

Traffic 52

Traffic Cache Servers Network 52

Adrian Cockcroft

JANUARY 20, 2023

In recent years GPU development that was originally funded by the gaming market (and ended up being used as a supercomputer accelerator) has been dominated by use in the AI/ML accelerator market. doubles the speed and adds a lot of features to the existing CXL2.0 spec was released in mid-2022. switch from XConn shown in the Expo.

Architecture 52

Architecture Latency Benchmarking AWS 52

IO River

NOVEMBER 2, 2023

A CDN, or Content Delivery Network, is a network of servers strategically positioned across various locations to expedite content delivery to users based on their geographic location.These patterns split into two main forms of traffic:Static Traffic: When a user request targets static content, the CDN first checks its cache.

Traffic 40

Traffic Cache Servers Network 40

Scalegrid

AUGUST 30, 2019

Depending on how it is configured, Redis can act like a database, a cache or a message broker. Session Cache: Many websites leverage Redis Strings to create a session cache to speed up their website experience by caching HTML fragments or pages. It’s important to note that Redis is a NoSQL database system.

Cache 232

Cache Ecommerce Social Media Database 232

Randon ASCII

JANUARY 12, 2022

That meant I started having regular meetings with the hardware engineers who were working with IBM on the CPU which gave me even more expertise on this CPU, which was critical in helping me discover a design flaw in one of its instructions , and in helping game developers master this finicky beast. To the left of that is one of the CPU cores.

Cache 126

Cache Latency Benchmarking Hardware 126

Smashing Magazine

AUGUST 22, 2021

A Primer on Speed. Discussing performance and “speed” can quickly get complex, because many underlying aspects contribute to a web-page loading “slowly”. It is physically limited by the speed of light or, practically, how fast signals can travel in wires or in the open air. also “only” take two round trips ((b) is rarely shown).

Performance 109

Performance Network Latency Servers 109

ACM Sigarch

OCTOBER 12, 2020

But any time memory and application logic moves into Python land, it’s game over. For example, we should care less if a proposed mobile chip or compiler optimization slows down SPEC, and care more if it speeds up Python or JavaScript! Are caches large enough for this code?

C++ 109

C++ Benchmarking Hardware Architecture 109

CSS - Tricks

DECEMBER 21, 2021

HTML-first, JavaScript last: the secret to web speed! Make ’em smaller is the main game, then constantly keep an eye on them. New HTTP standards for caching on the modern web — Tim Perry gets into two brand new (proposed) caching headers: Cache-Status and Targetted Cache-Control. div ::app-state=".

Performance 64

Performance Cache Media Games 64

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Recall that single-core performance most directly translates into speed on the web. The Moto G4 , for example. Updated Geekbench 4 single-core scores for each mobile price-point." How bad is it?

Performance 127

Performance Network Mobile Metrics 127

Smashing Magazine

JANUARY 21, 2021

After the latest redesign in late 2017, it was Ilya Pukhalski on the JavaScript side of things (part-time), Michael Riethmueller on the CSS side of things (a few hours a week), and yours truly, playing mind games with critical CSS and trying to juggle a few too many things. This is where we started.

Performance 111

Performance Cache Mobile Network 111

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. You can create your own on Chrome UX Dashboard. Large preview ). Large preview ).

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Start Render time, Speed Index ). Treo Sites provides competitive analysis based on real-world data.

Performance 112

Performance Cache Servers Network 112

Smashing Magazine

JANUARY 7, 2019

You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Note : If you use Page Speed Insights (no, it isn’t deprecated), you can get CrUX performance data for specific pages instead of just the aggregates.

Performance 111

Performance Cache Network Metrics 111

Speed Curve

APRIL 7, 2025

They haven't been quite as successful in keeping the Chromies down as Apple did the WebKittens, but the net effect of various management and political games should be read with not insignificant scepticism. Why, for example, is Google still withholding the ability for competing browsers to ship real PWAs on Android (a.k.a.

Performance 52

Performance Energy Google Strategy 52