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

Sutter's Mill

NOVEMBER 24, 2024

On Saturday, the ISO C++ committee completed the third-last design meeting of C++26, held in Wrocaw, Poland. There are just two meetings left before the C++26 feature freeze in June 2025, and C++26 is on track to be completed two more meetings after that in early 2026. is the nutshell synopsis. Thank you, Hana!

C++ 62

C++ Code Education Design 62

SQL Performance

MARCH 9, 2022

But SQL Server doesn’t currently support an efficient combination of parallel order-preserving index operation prior to a parallel batch-mode Window Aggregate operator, so as a result, an explicit parallel Sort operator precedes each of the parallel Window Aggregate operators. That’s a pretty efficient plan! Itzik’s Solution.

C++ 138

C++ Code Efficiency Performance 138

SQL Performance

AUGUST 1, 2022

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. Most operators that you use in such comparisons, including the equals (=) and different than (<>) operators, use three-valued logic.

Servers 142

Servers Testing C++ Code 142

Sutter's Mill

MAY 1, 2023

This update covers Acknowledgments, and highlights of what’s new in the compiler and language since last time, including: simple, mathematically safe, and efficient chained comparisons named break and continue “simple and safe” starts with. In today’s C++, this kind of comparison silently compiles but is a bug.

C++ 97

C++ Virtualization Lambda Code 97

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 Programming 98

SQL Performance

APRIL 13, 2022

L0 AS ( SELECT 1 AS c. Remember, extra points if you manage to come up with an efficient solution without explicit sorting in the plan. Following is the first solution to our challenge, which is based on a technique that has been known for a while: WITH C AS. (

C++ 136

C++ Strategy Testing Servers 136

SQL Performance

DECEMBER 9, 2020

L0 AS ( SELECT 1 AS c. Figure 1: Plan for base CTE cardinality of 2.

C++ 114

C++ Servers Testing Processing 114

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. bits per unique value. Frequency Estimation: Count-Min Sketch.

Analytics 191

Analytics Traffic Big Data Efficiency 191

The Netflix TechBlog

JANUARY 24, 2022

Regressive build is above alert threshold Subsequent build is easily below alert threshold c) Performance tests against PRs, which had been almost constantly red (because the probability of at least one static threshold being breached was always high), are now mostly green. the data itself now sets the thresholds dynamically.

Performance 208

Performance Performance Testing Metrics Testing 208

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++ 105

C++ Virtualization Programming Latency 105

Smashing Magazine

JULY 19, 2021

By adding automated visual testing , we can eliminate those flaky tests , leveling up our testing pipelines providing that coverage (and more) by taking advantage of smart image comparisons using screenshots of our website or app. Image Comparisons. Leveraging The Different Types Of Testing. How Does Visual Testing Work?

Testing 144

Testing Code Design Strategy 144

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

SQL Performance

APRIL 14, 2021

I also love his efficient and eloquent writing style. Besides row mode being less efficient than batch mode for CPU intensive operations, also, keep in mind that switching from row to batch mode and back takes extra toll. b FROM L1 AS A CROSS JOIN L1 AS B CROSS JOIN L1 AS C ) INSERT INTO dbo. I love Paul White ’s work.

Servers 112

Servers C++ Testing Code 112

Scalegrid

AUGUST 15, 2019

This feature is perfect for someone who is not as familiar or efficient in using MongoDB syntax. Query Code for converting queries to five target language: Java, Python, C#, PHP, and JavaScript (Node.js). Whether you are a newbie or an expert in MongoDB, Studio 3T is there to save you time.

Database 40

Database Servers Availability Monitoring 40

SQL Performance

MAY 8, 2019

GetNums ( 1 , 100 ) AS C WHERE C. GetNums ( 1 , 100 ) AS C WHERE C. But for customers 17 and 59, the IN predicate yields UNKNOWN since all comparisons with non-NULL values yield FALSE, and the comparison with the NULL yields UNKNOWN. custid , C. custid = C. CREATE TABLE dbo.

Best Practices 68

Best Practices C++ Code Servers 68

HammerDB

JUNE 27, 2022

The wide range of database support gives HammerDB an advantage over other database benchmarking tools that only implement workloads against one or two databases, limiting comparison between database engines and assessing relative performance. When reporting TPROC-C workloads the key metric is known as NOPM or New Orders per Minute.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

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

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. P0542: Support for contract based programming in C++” (WG21 paper, June 2018). b) arbitrarily expensive “A condition that’s expensive? Dos Reis, J. Meredith, N. Stroustrup.

C++ 63

C++ Programming Cache Testing 63

Testsigma

AUGUST 28, 2021

An efficient and economic way of getting access to all the real browsers and devices that your customers might be using is via a cloud device lab. Your ROI would be “(a+b) – c”. Automation makes sure that the same steps are executed on all the devices and browsers and any discrepancy in any one of the browsers/devices is caught.

Testing 75

Testing Cloud C++ Operating System 75

Nick Desaulniers

MAY 25, 2015

The other programs that might be compiled are C, C++, and to some extent Java and C#. In this post, I hope to show how similar by comparing the code for an interpreter, a compiler, and a JIT compiler for the language Brainfuck in around 100 lines of C code each. All of the code in the post is up on GitHub.

C++ 73

C++ Programming Code Architecture 73

SQL Performance

DECEMBER 9, 2020

L0 AS ( SELECT 1 AS c. Figure 1: Plan for base CTE cardinality of 2.

C++ 61

C++ Servers Testing Processing 61

O'Reilly

SEPTEMBER 19, 2023

Hadoop’s value—being able to crunch large datasets—often paled in comparison to its costs. Their research has applied evolutionary algorithms to groups that need efficient ways to manage finite, time-based resources such as classrooms and factory equipment. And harder to sell a data-related product unless it spoke to Hadoop.

Hardware 134

Hardware Storage Big Data Blockchain 134

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

Official Blog - World Web Technology

APRIL 29, 2024

Robust technology is required nowadays to develop a new mobile app for the business segment that requires minimal time and is effortless and efficient. It uses a single code Dart to develop mobile apps that are clammed with the Objective C and Java Code on Android and iOS respectively. Not recommended for long-term use.

Social Media 52

Social Media Mobile Open Source Hardware 52

Official Blog - World Web Technology

APRIL 29, 2024

Robust technology is required nowadays to develop a new mobile app for the business segment that requires minimal time and is effortless and efficient. It uses a single code Dart to develop mobile apps that are clammed with the Objective C and Java Code on Android and iOS respectively. Not recommended for long-term use.

Social Media 52

Social Media Mobile Open Source Hardware 52

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. Performance comparison.

Development 52

Development Social Media Mobile Code 52

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 Architecture 47

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. Sauce Labs emphasizes in-sprint testing to focus on the entire software journey and product efficiency and calls itself a customer-centric product. Highlights.

Testing 52

Testing Testing Tools Analytics Java 52

O'Reilly

MAY 19, 2020

However, a notable minority—some 15%—occupy C-level or executive roles. Oddly, about 3% of non-adopters cited cost as a primary reason not to move workloads to cloud; cost-efficiency is usually touted as one of cloud’s most attractive features. A comparison of respondent organization size and share of applications hosted in the cloud.

Cloud 144

Cloud Serverless AWS DevOps 144

Enprowess

MAY 24, 2022

When one needs to make complex calculations simultaneously, then Swift, Objective-C, and Java have more speed than JavaScript since there are overheads within JavaScript to control native elements. React vs React Native: Head to Head Comparison. React JS offers more time efficiency. Abstraction layer issue. It uses HTML tags.

Mobile 52

Mobile Open Source Virtualization Speed 52

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. Get efficient test automation being codeless with Testsigma. Ranorex Studio : Ranorex Studio is a codeless test automation tool that supports tech stacks such as.NET, C#, HTML5, Java, etc.

Testing Tools 52

Testing Tools Testing Analytics Mobile 52

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

O'Reilly

MARCH 23, 2023

The LLaMA source code has been ported to C++ , and a small version of the model itself (7B) has been leaked to the public, yielding a model that can run on laptops. LLaMA Developed by Facebook/Meta, and available to researchers by application. Facebook released a previous model, OPT-175B , to the open source community.

Google 137

Google Open Source Programming Code 137

Smashing Magazine

SEPTEMBER 6, 2021

For example, you could reduce compression efficiency , because that works better with more data. If you do any comparison of this sort yourself (or if you read articles that do), make 100% sure that you’ve checked what’s actually going on. This is true, but only to a relatively limited extent. Implementation.

Network 120

Network Servers Cache Traffic 120

Brendan Gregg

SEPTEMBER 5, 2017

. - **eBPF**: tracing features completed in 2016, this provides efficient programmatic tracing to existing kernel frameworks. Hit Ctrl-C to end. ^C Oracle have a similar useful page as well: the Linux to Oracle Solaris 11 comparison, as well as a [procedure] for migrating from Solaris to Linux. Tracing ZFS operation latency.

Virtualization 75

Virtualization AWS Engineering Hardware 75

John McCalpin

JANUARY 22, 2018

Pointer arithmetic, loop index increments, loop trip count comparisons, and conditional branches are all essentially “free” on mainstream Xeon processors, but have to be considered very carefully on the Xeon Phi x200. 8.056 0.056 75.0% 74.48% 0.70% 2 24 3 27 13.5 7.086 0.086 85.71% 84.67% 1.22% 4 48 3 51 12.75 FMAs/cycle.

Latency 40

Latency Hardware Code Testing 40