The Netflix TechBlog

MARCH 13, 2020

The teams have been working closely on SVT-AV1 development, discussing architectural decisions, implementing new tools, and improving compression efficiency. SVT-AV1 codebase status The SVT-AV1 repository includes both an AV1 encoder and decoder, which share a significant amount of the code.

Open Source 154

Open Source Efficiency C++ Speed 154

SQL Performance

AUGUST 1, 2022

If you’ve been writing and optimizing T-SQL code for a while, you’re probably well aware of the many complexities involved with NULL handling. One of the complexities that is of a specific importance to this section is comparisons that potentially involve NULL comparands, such as ones that you use in filter and join predicates.

Servers 142

Servers Testing C++ Code 142

The Netflix TechBlog

APRIL 17, 2019

Reference software serves as the basis for standard development, a framework, in which the performance of video coding tools is evaluated. This makes it possible for SVT-AV1 to decrease encoding time while still maintaining compression efficiency. The reference software typically evolves along with the development of the standard.

Open Source 166

Open Source Scalability Speed Efficiency 166

Sutter's Mill

FEBRUARY 17, 2020

C++ “move” semantics are simple, and unchanged since C++11. Move: What it is, and how to use it In C++, copying or moving from an object a to an object b sets b to a ’s original value. Copy is always a valid implementation of move if the type didn’t provide anything more efficient. Yes, but don’t.

C++ 98

C++ Testing Design Strategy 98

SQL Performance

APRIL 13, 2022

Use the following code to create a table called T1 and populate it with a small set of sample data: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo. Use the following code to create the helper function GetNums: CREATE FUNCTION dbo. L0 AS ( SELECT 1 AS c. I recommend you try to find a solution before implementing mine.

C++ 136

C++ Strategy Testing Servers 136

SQL Performance

DECEMBER 9, 2020

Use the following code to run a test with base CTE cardinality of 2 (requires 5 additional levels of CTEs): DECLARE @low AS BIGINT = 1 , @high AS BIGINT = 100000000 ; WITH. Make sure that you enable Discard results after execution in your SSMS Query Options dialog under Grid, Results.

C++ 114

C++ Servers Testing Processing 114

Percona

JUNE 4, 2023

In this blog, we’ll provide a comparison between MariaDB vs. MySQL (including Percona Server for MySQL ). Via various optimization techniques, such as advanced query optimization, efficient indexing, and fast data processing, MariaDB can deliver excellent performance even when running heavy workloads.

Open Source 52

Open Source Servers Storage Scalability 52

HammerDB

JUNE 27, 2022

HammerDB is Free software and consequently engineers should consider not only how they can benefit from using the software but also how they can contribute to the community with code and documentation. In addition to the TPC-C specification for OLTP workloads, the TPC has also developed the TPC-E specification. Derived Workloads.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Enprowess

NOVEMBER 2, 2021

Quick Summary : A comparison of the two most widely used cross platform frameworks to build both iOS and Android mobile applications: React Native vs Flutter. Before starting with a detailed comparison, let us first overview both the frameworks React Native and Flutter. Performance comparison. Code Maintainability.

Development 52

Development Social Media Mobile Code 52

The Netflix TechBlog

JANUARY 24, 2022

It’s harder to reason about the performance profile of pre-production code since we can’t gather real-time metrics for code that hasn’t yet shipped. Because changepoint detection requires after-the-fact data, they are best suited to identifying potentially regressive code that is already in the main branch but has not yet been shipped.

Performance 199

Performance Metrics Performance Testing Testing 199

The Netflix TechBlog

SEPTEMBER 10, 2019

In order to replicate results, scientists had to delve deep into the data, code, and documentation. We’ve also made sure that both production and local workflows use the same code base, so reproducibility is a given and promotion to production is just a pull request away.

Metrics 215

Metrics Architecture Infrastructure Innovation 215

Smashing Magazine

JULY 19, 2021

Between an endless amount of code to make sure you’re providing full coverage and dealing with the fragile nature of front-end tests — where a simple selector change can completely break an end-to-end workflow — it can sometimes feel like an uphill battle. They’re all testing the code. add-to-cart').click();

Testing 142

Testing Code Design Strategy 142

Highly Scalable

JUNE 5, 2012

In this article I describe several useful techniques that are based on SSE instructions and provide results of performance testing for Lucene, Java, and C implementations. Performance of this procedure both in C and Java will be evaluated in the last section.

C++ 102

C++ Java Performance Testing Efficiency 102

SQL Performance

MAY 8, 2019

Run the following code to create a helper function called GetNums, and to create and populate the Customers and Orders tables: SET NOCOUNT ON ; USE tempdb ; GO. GetNums ( 1 , 100 ) AS C WHERE C. However, the code uses custid in both the outer and inner queries. Substitution error. DROP TABLE IF EXISTS dbo.

Best Practices 68

Best Practices C++ Code Servers 68

SQL Performance

APRIL 14, 2021

I also love his efficient and eloquent writing style. Use the following code to test the function with the variable assignment technique: DECLARE @n AS BIGINT ; SELECT @n = n FROM dbo. I love Paul White ’s work. I keep being shocked by his discoveries, and wonder how the heck he figures out what he does. NullBits102400 ; GO.

C++ 112

C++ Servers Testing Code 112

SQL Performance

DECEMBER 9, 2020

Use the following code to run a test with base CTE cardinality of 2 (requires 5 additional levels of CTEs): DECLARE @low AS BIGINT = 1 , @high AS BIGINT = 100000000 ; WITH. Make sure that you enable Discard results after execution in your SSMS Query Options dialog under Grid, Results.

C++ 61

C++ Servers Testing Processing 61

Enprowess

MAY 24, 2022

It allows developers to create complex UIs from a small and isolated code called “components” ReactJS comprises two parts: the pieces containing HTML code, components, and an HTML document – where all your components will render. Platform-specific code. Large Ecosystem Of Developer Tools.

Mobile 52

Mobile Open Source Virtualization Speed 52

Sutter's Mill

JANUARY 25, 2021

Not only is the integer comparison operation cheap, but min and max are already being accessed by this function and so they’re already “hot” in registers or cache. We want a way to enable checking for some assertions but not others in the same code, because we may not always be able to afford expensive checks.

C++ 45

C++ Programming Cache Testing 45

Testsigma

JULY 31, 2021

Testers work in tandem with developers and product managers in this testing process to focus on the overall efficiency of the product. Increased test efficiency. You can write your test scripts in simple English as it’s a codeless testing tool; your test scripts are translated into code by its NLP capabilities. Highlights.

Testing 52

Testing Testing Tools Analytics Java 52

Brendan Gregg

OCTOBER 8, 2018

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. Here's a comparison for an average-sized DTraceToolkit script (seeksize.d)

C++ 110

C++ Virtualization Programming Latency 110

Testsigma

JUNE 26, 2021

If we talk about testing itself — automation has taken us several leaps ahead; QA teams have solidified test efficiency and coverage even further. Gone are the days when automation testers had to learn coding to write test scripts. Get efficient test automation being codeless with Testsigma. from the same place. Signup Now.

Testing Tools 52

Testing Tools Testing Analytics Mobile 52

SQL Performance

SEPTEMBER 5, 2019

CREATE CLUSTERED COLUMNSTORE INDEX c ON #T WITH ( MAXDOP = 1 ) ; Run the following test queries against the new columnstore table: SELECT. c = COUNT_BIG ( * ) FROM #T AS T WHERE 1 = ( SELECT 1 ) -- Avoid trivial plan. c = COUNT_BIG ( * ) FROM #T AS T WHERE 1 = ( SELECT 1 ) -- Avoid trivial plan.

Performance 81

Performance C++ Storage Servers 81

O'Reilly

SEPTEMBER 19, 2023

” Each step has been a twist on “what if we could write code to interact with a tamper-resistant ledger in real-time?” Hadoop’s value—being able to crunch large datasets—often paled in comparison to its costs. Mental contortions led to code contortions led to frustration. The elephant was unstoppable.

Hardware 97

Hardware Storage Big Data Blockchain 97

ACM Sigarch

OCTOBER 4, 2018

Order preserving encryption is only useful when simple comparisons such as less than/greater than need to be applied to data and reveals the outcome of these comparisons to an attacker, but is reasonably efficient. For Further Study: Applied Cryptography: Protocols, Algorithms, and Source Code in C by Schneier.

Systems 47

Systems Hardware Storage Healthcare 47

Smashing Magazine

AUGUST 9, 2021

HTTP/2 versus HTTP/3 protocol stack comparison ( Large preview ). QUIC is needed because TCP, which has been around since the early days of the Internet, was not really built with maximum efficiency in mind. For example, if we have files A, B, and C, we would have three TCP connections. For HTTP/1.1, Large preview ).

Transportation 145

Transportation Internet Internet Network 145

Nick Desaulniers

MAY 25, 2015

The other programs that might be compiled are C, C++, and to some extent Java and C#. Taking the time to do translation to native machine code ahead of time can result in better performance at runtime, but an interpreter can get to work right away without spending any time translating. const char * const prologue =. "

C++ 73

C++ Programming Code Architecture 73

O'Reilly

MARCH 23, 2023

It can explain code that you don’t understand, including code that has been intentionally obfuscated. Sydney The internal code name of the chatbot behind Microsoft’s improved search engine, Bing. Bard Google’s code name for its chat-oriented search engine, based on their LaMDA model, and only demoed once in public.

Google 103

Google Open Source Programming Code 103

Brendan Gregg

OCTOBER 7, 2018

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. Here's a comparison for an average-sized DTraceToolkit script (seeksize.d)

C++ 40

C++ Virtualization Programming Latency 40

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? It’s much easier to reach performance goals when the code base is fresh or is just being refactored.

Performance 145

Performance Cache Media Metrics 145

Highly Scalable

MAY 1, 2012

On the other hand, when one is interested only in simple additive metrics like total page views or average price of conversion, it is obvious that raw data can be efficiently summarized, for example, on a daily basis or using simple in-stream counters. This technique is shown in the code snippet below. bits per unique value.

Analytics 191

Analytics Traffic Big Data Efficiency 191

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? The first render tends to warm up a bunch of lazily compiled code, which a larger tree can benefit from when it scales.

Performance 104

Performance Cache Network Metrics 104

Smashing Magazine

AUGUST 22, 2021

One aspect of performance is about how efficiently a transport protocol can use a network’s full (physical) bandwidth (i.e. For example, for streams A, B, and C, we might see a packet sequence of ABCABCABCABCABCABCABCABC , where we change the active stream in each packet (let’s call this round-robin). Congestion Control.

Performance 106

Performance Network Latency Servers 106

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? It’s much easier to reach performance goals when the code base is fresh or is just being refactored.

Performance 145

Performance Cache Network Metrics 145

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. Instead, we found puzzle after puzzle. Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40

Brendan Gregg

SEPTEMBER 5, 2017

It uses a Solaris Porting Layer (SPL) to provide a Solaris-kernel interface on Linux, so that unmodified ZFS code can execute. There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). Hit Ctrl-C to end. ^C

Virtualization 76

Virtualization AWS Engineering Hardware 76

Scalegrid

AUGUST 15, 2019

This feature is perfect for someone who is not as familiar or efficient in using MongoDB syntax. It’s further enhanced by an in-place code editor which is also available in all three views. Query Code for converting queries to five target language: Java, Python, C#, PHP, and JavaScript (Node.js).

Database 40

Database Servers Monitoring Availability 40

SQL Server According to Bob

JANUARY 11, 2020

Character POS ASCII Value Formula Value A 1 65 67 C 2 67 69 Checksum 136 Comparing ​​ the checksum values indicates ​​ that the values do not match and ​​ damage ​​ has occurred to the data. KB ​​ boundaries efficiently. ​​ This creates 8?KB

Servers 40

Servers Cache Database Media 40