Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you _time_ time? us on Ubuntu.

Speed 126

Speed Java AWS Virtualization 126

SQL Performance

OCTOBER 14, 2020

Here’s the attempted solution using a CTE: WITH C AS. ( Using our trick with the TOP filter in the inner query, you prevent the unnesting of the table expression, like so: WITH C AS. ( The following code returns only shippers with a maximum order date that is on or after January 1 st , 2018: USE PerformanceV5 ; WITH C AS. (

C++ 140

C++ Servers Code Efficiency 140

Dynatrace

APRIL 5, 2021

As early as 2015, the Canadian Broadcasting corporation used Azure App Services, the managed platform for building web apps, to scale its real-time election-night website to handle requests from millions of users. The growth of Azure cloud computing. Making the best use of Azure Functions.

Azure 137

Azure Serverless IoT Lambda 137

The Netflix TechBlog

JULY 1, 2019

In a previous post , we described how our TV application consists of a C++ SDK installed natively on the device, an updatable JavaScript user interface (UI) layer, and a custom rendering layer known as Gibbon. We ship the same UI to thousands of different devices in order to deliver a consistent user experience.

Cache 166

Cache Design Testing Development 166

Percona

JANUARY 17, 2019

In this article, we will look at how this can improve the reporting/analytical query performance in MySQL. I’m using the “Airlines On-Time Performance” database from [link] (You can find the scripts I used here: [link] ). Result: ~10x performance gain, no index used. AWS Aurora (based on MySQL 5.6) MySQL on ec2.

Cache 47

Cache C++ AWS Airlines 47

SQL Performance

APRIL 8, 2020

When I read C. For anyone who choses data as their career, I recommend reading SQL and Relational Theory: How to Write Accurate SQL Code 3rd Edition by C. Date (O'Reilly 2015). As mentioned earlier, I use the term table expression following C. My expertise is T-SQL. Dates' use of this term.

C++ 143

C++ Azure Database Servers 143

SQL Performance

OCTOBER 14, 2020

Here’s the attempted solution using a CTE: WITH C AS. ( Using our trick with the TOP filter in the inner query, you prevent the unnesting of the table expression, like so: WITH C AS. ( The following code returns only shippers with a maximum order date that is on or after January 1 st , 2018: USE PerformanceV5 ; WITH C AS. (

C++ 52

C++ Servers Code Efficiency 52

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you _time_ time? us on Ubuntu.

Speed 40

Speed Java AWS Virtualization 40

Enprowess

MAY 24, 2022

This functionality gives an edge to Reactjs by increasing performance and decreasing programming time compared to another mobile app development platform. The Performance hence depends upon third-party libraries. React Native was used for the very first time in the year 2015 by Facebook for developing mobile applications.

Mobile 52

Mobile Open Source Virtualization Speed 52

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you time time?

Speed 52

Speed Java AWS Virtualization 52

Testsigma

FEBRUARY 19, 2021

XCUITest is a UI testing framework for iOS apps that was launched by Apple in 2015. It helps the developers and QAs to test the UI of native iOS applications by leveraging Swift or Objective C programming language. It has all the essential elements needed to achieve a super-fast test development using simple English language.

Testing Tools 57

Testing Tools Mobile Testing Java 57

Smashing Magazine

AUGUST 9, 2021

Often they make it seem as if HTTP/3 is a revolution in performance, while it is really a more modest (yet still useful!) It was heralded as an amazing performance revolution, with exciting new features such as server push, parallel streams, and prioritization. HTTP/3 performance features ( coming up soon! ).

Transportation 145

Transportation Internet Internet Network 145

Enprowess

NOVEMBER 2, 2021

Know the difference between Flutter vs React Native in terms of architecture, performance, community support, learning curve, use cases and many other aspects. Performance comparison. It offers tools to build expressive and flexible user interfaces with native performance. Table of Contents. What is Flutter? – An overview.

Development 52

Development Social Media Mobile Code 52

Brendan Gregg

AUGUST 8, 2017

If they are higher than your CPU count, then you might have a performance problem (it depends). TABLE OF EXP(-T/C) FOR T = 5 SEC. EXPFF: EXP 0.920043902 ;C = 1 MIN EXP 0.983471344 ;C = 5 MIN EXP 0.994459811 ;C = 15 MIN. which should improve performance and lower the load average. Yes, I'd say so.

Latency 111

Latency Metrics C++ Systems 111

Alex Russell

SEPTEMBER 12, 2016

In January 2015 I designed the criteria that Chrome uses to trigger “Add to Homescreen” prompts. In US educational terms, doing well in these criteria will be the difference between a C- and an A-: Mobile-friendly design. Performance testing is difficult! I’d know. Getting Ready For Prime Time. But which ones?

Mobile 52

Mobile Network Education Design 52

Randon ASCII

FEBRUARY 25, 2018

The next step was a custom C++ program that opened the just-linked exe and called FlushFileBuffers on it. Either way, whether we fixed two or three separate bugs, Chrome’s builds are much more reliable now and I can go back to doing build-performance testing without hitting failures. failure rate. Or did we just get lucky or oblivious?

Programming 79

Programming Hardware Cache Code 79

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

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

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 103

Performance Cache Metrics Network 103

Percona

JANUARY 14, 2019

With the latest ClickHouse version, all of these features are available, but some of them may not perform fast enough. Updating a single message in the past (e.g. in the case of messages, we may need to update the final price; in the case of comments, we may need to upvote or downvote a comment). Deleting messages. Text search.

Database 40

Database Analytics Blockchain Healthcare 40