The Netflix TechBlog

SEPTEMBER 8, 2020

On the Android team, while most of our time is spent working on the app, we are also responsible for maintaining this backend that our app communicates with, and its orchestration code. Image taken from a previously published blog post As you can see, our code was just a part (#2 in the diagram) of this monolithic service.

Latency 233

Latency Cache Java Traffic 233

Smashing Magazine

AUGUST 3, 2023

How We Optimized Performance To Serve A Global Audience How We Optimized Performance To Serve A Global Audience Liran Cohen 2023-08-03T10:00:00+00:00 2023-08-03T13:06:00+00:00 I work for Bookaway , a digital travel brand. Large preview ) We’ve known for a long time that fast page performance influences search engine rankings.

Performance 74

Performance Cache Traffic Metrics 74

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. Web performance is a tricky beast, isn’t it?

Performance 145

Performance Cache Media Metrics 145

Dynatrace

SEPTEMBER 13, 2023

The framework comprises six pillars: Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimization, and Sustainability. And how can you verify this performance consistently across a multicloud environment that also uses Microsoft Azure and Google Cloud Platform frameworks?

AWS 243

AWS Efficiency Azure Cloud 243

CSS Wizardry

MAY 31, 2019

Users might already have the file cached. If website-a.com links to [link] , and a user goes from there to website-b.com who also links to [link] , then the user will already have that file in their cache. On a slower, higher-latency connection, the story is much, mush worse. Penalty: Caching. All completely avoidable.

Cache 274

Cache Latency Infrastructure Website 274

Alex Russell

DECEMBER 18, 2022

2023 Content Targets Desktop Devices Networks Mobile Devices Networks Developing Your Own Targets The Performance Inequality Gap is Growing. Last month, I had the honour of joining what seemed like the entire web performance community at performance.now() in Amsterdam. This is an ethical crisis for the frontend. 2023 Content Targets #.

Performance 113

Performance Network Mobile Latency 113

Sutter's Mill

FEBRUARY 13, 2017

Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). On April 25-27, I’ll be in Stockholm (Kista) giving a three-day seminar on “High-Performance and Low-Latency C++.” Here is the summary, below; for a more detailed topic breakdown see the link above. Description.

Latency 51

Latency C++ Hardware Performance 51

Randon ASCII

SEPTEMBER 8, 2019

Disclaimer: I didn’t find a solution, but I did find some crazy code. The fact that this shows up as CPU time suggests that the reads were all hitting in the system cache and the CPU time was the kernel overhead (note ntoskrnl.exe on the first sampled call stack) of grabbing data from the cache. Think about that for a moment.

Latency 79

Latency Cache Programming Operating System 79

CSS Wizardry

AUGUST 7, 2019

The first—and often most surprising for people to learn—thing that I want to draw your attention to is that TTFB counts one whole round trip of latency. The reason is because mobile networks are, as a rule, high latency connections. only to find that the resource they’re requesting isn’t in that PoP ’s cache.

Latency 269

Latency Ecommerce Servers Mobile 269

John McCalpin

APRIL 25, 2023

The primary metric for memory bandwidth in multicore processors is that maximum sustained performance when using many cores. This post is about a secondary performance characteristic — sustained memory bandwidth for a single thread running on a single core. buffer copies for filesystem access) with a single thread.

Benchmarking 97

Benchmarking Cache Latency Tuning 97

Dotcom-Montior

MARCH 6, 2022

They can also let the user easily see how good or bad the performance of their website is, showing you exactly what is slowing down your site. Element Performance : A user can reach the information of the performance of each element that exists in waterfall chart. In the image below, it is pointed at with the arrow.

Performance 52

Performance Cache Website Speed 52

The Morning Paper

FEBRUARY 6, 2020

Last week we looked at a function shipping solution to the problem; Cloudburst uses the more common data shipping to bring data to caches next to function runtimes (though you could also make a case that the scheduling algorithm placing function execution in locations where the data is cached a flavour of function-shipping too).

Lambda 98

Lambda Serverless Cache Latency 98

Dynatrace

OCTOBER 4, 2022

The performance of these queries needs to be at a level where they can support ad-hoc analytics use cases. Data lakehouses deliver the query response with minimal latency. It uses cost-effective and durable object storage to store massive volumes of data without the traditional cost and performance tradeoffs.

Artificial Intelligence 205

Artificial Intelligence Analytics Storage Government 205

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

Smashing Magazine

MAY 16, 2022

To my surprise, web performance monitoring conversations rarely surface Server-Timing or cover a very shallow understanding of its application — despite it being out for many years. Web browsers expose a global Performance Timeline API to inspect details about specific metrics/events that have happened during the page lifecycle.

Servers 93

Servers Monitoring Cache Network 93

Dotcom-Montior

MAY 6, 2020

They can also let the user easily see how good or bad the performance of their website is, showing you exactly what is slowing down your site. Interactive Slider : The Interactive Slider is an indicator of the performance of each element in terms of milliseconds. Browser (Chrome, Firefox, Internet Explorer, mobile browsers etc…).

Performance 53

Performance Cache Website Speed 53

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 Network Metrics 104

John McCalpin

APRIL 2, 2020

This was a keynote presentation at the “2nd International Workshop on Performance Modeling: Methods and Applications” (PMMA16), June 23, 2016, Frankfurt, Germany (in conjunction with ISC16 ). Here I assumed a particular analytical function for the amount of memory traffic as a function of cache size to scale the bandwidth time.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

The Netflix TechBlog

NOVEMBER 9, 2022

A quick canary test was free of errors and showed lower latency, which is expected given that our standard canary setup routes an equal amount of traffic to both the baseline running on 4xl and the canary on 12xl. What’s worse, average latency degraded by more than 50%, with both CPU and latency patterns becoming more “choppy.”

Hardware 363

Hardware Cache Performance Latency 363

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. The code for the site is available on GitHub for reference. Here’s the thing: performance is more than a one-off task.

Cache 92

Cache Social Media Media Network 92

High Scalability

JULY 20, 2018

Cliff Click : The JVM is very good at eliminating the cost of code abstraction, but not the cost of data abstraction. That means multiple data indirections mean multiple cache misses. This is where your performance goes. They are very expensive. Some say MRAM will never work in automotive.

Internet 121

Internet Internet Scalability Automotive 121

ScaleOut Software

MAY 15, 2014

We have spent a great deal of time at ScaleOut Software re-architecting our in-memory data grid (IMDG)’s code base to make best use of many cores and large memory. Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Testing Scale-Up Performance.

Cache 40

Cache Servers Network Design 40

Smashing Magazine

APRIL 17, 2019

Optimizing Performance With Resource Hints. Optimizing Performance With Resource Hints. Modern web browsers use all sorts of techniques to help improve page load performance by guessing what the user may be likely to do next. The browser caches the results of these lookups, but they can be slow. Drew McLellan.

Performance 106

Performance Games Servers Cache 106

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map. cachestat File system cache statistics line charts. runqlat CPU scheduler latency heat map. biolatency Disk I/O latency histogram heat map. cachestat File system cache statistics line charts. runqlat CPU scheduler latency heat map. opensnoop Files opened table.

Latency 145

Latency Cache Energy Systems 145

Adrian Cockcroft

JANUARY 20, 2023

on Myths and Legends of High Performance Computing  — it’s a somewhat light-hearted look at some of the same issues by the leader of the team that built the Fugaku system I mention below. The emergence of chiplet technology also allows higher performance and integration without having to design every chip from scratch.

Architecture 52

Architecture Latency Benchmarking AWS 52

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

The Morning Paper

SEPTEMBER 10, 2019

When each of those use cases is powered by a dedicated back-end, investments in better performance, improved scalability and efficiency etc. That’s hard for many reasons, including the differing trade-offs between throughput and latency that need to be made across the use cases. are divided. Reporting and dashboarding use cases (e.g.

Analytics 75

Analytics Latency Cache Google 75

Brendan Gregg

AUGUST 18, 2019

bpftrace is a new open source tracer for Linux for analyzing production performance problems and troubleshooting software. It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. For smaller environments, it can be of more use helping eliminate latency outliers.

Latency 68

Latency C++ Cache Programming 68

Speed Curve

JUNE 18, 2019

At some point you'll be given permission to "focus on performance" and after many more hours, the website will be fast again. What if there was a way that you could prevent performance from degrading in the first place? Some sort of performance gateway that only allows changes to production code if they meet performance requirements?

Performance Testing 49

Performance Testing Testing Performance Cache 49

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? If I am analyzing (apparent) performance shortfalls, how can I distinguish between cause and effect ? The source code to the library may not be available.

Hardware 40

Hardware Transportation Performance Latency 40

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

ScaleOut Software

JULY 21, 2020

For more than fifteen years, ScaleOut StateServer® has demonstrated technology leadership as an in-memory data grid (IMDG) and distributed cache. Designed to help scalable applications deliver high performance, it stores live, fast-changing data in memory (DRAM) for fast updates and retrieval. The Challenges with Parallel Queries.

Analytics 52

Analytics Airlines Cache Scalability 52

ScaleOut Software

JULY 21, 2020

For more than fifteen years, ScaleOut StateServer® has demonstrated technology leadership as an in-memory data grid (IMDG) and distributed cache. Designed to help scalable applications deliver high performance, it stores live, fast-changing data in memory (DRAM) for fast updates and retrieval. The Challenges with Parallel Queries.

Analytics 52

Analytics Airlines Cache Scalability 52

CSS - Tricks

JULY 25, 2019

This article is from my friend Ben who runs Calibre , a tool for monitoring the performance of websites. Now that Google uses page speed as a ranking factor, many organizations have become laser-focused on performance. To understand how these changes affect us from a performance perspective, we need to grasp the underlying technology.

Google 71

Google Engineering Speed Mobile 71

IO River

NOVEMBER 2, 2023

CloudFront makes a simple choice here as it offers direct integration with all these services to let you cache responses across its global edge locations. ‍You might keep introducing CDN-level features specific to CloudFront that significantly improve your application's performance.

Lambda 52

Lambda AWS Cache Website 52

The Morning Paper

APRIL 14, 2019

When a side-channel is based on observing improved performance, a solution that removes the improved performance can work, but is clearly undesirable. Microarchitectural state of interest includes data and instruction caches, TLBs, branch predictors, instruction- and data-prefetcher state machines, and DRAM row buffers.

Hardware 44

Hardware Cache Latency Speed 44

The Morning Paper

MAY 12, 2019

The paper examines the implications of microservices at the hardware, OS and networking stack, cluster management, and application framework levels, as well as the impact of tail latency. Smaller microservices demonstrated much better instruction-cache locality than their monolithic counterparts. Hardware implications.

Open Source 61

Open Source Hardware Benchmarking Systems 61