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

DZone

FEBRUARY 27, 2021

This begins not only in designing the algorithm or coming out with efficient and robust architecture but right onto the choice of programming language. The legacy languages — be it ASM or C still rule in terms of performance. There were languages I briefly read about, including other performance comparisons on the internet.

Java 207

Java C++ Benchmarking Programming 207

Sutter's Mill

AUGUST 13, 2023

Thanks again to C++ Now for inviting me to speak this year in glorious Aspen, Colorado, USA! The talk I gave there was just posted on YouTube, you can find it here: At CppCon 2022, I argued for why we should try to make C++ 10x simpler and safer , and I presented my own incomplete experimental compiler, cppfront.

C++ 89

C++ Efficiency Design Virtualization 89

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

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

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++ 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. 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

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

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

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

Daniel Lemire

FEBRUARY 8, 2019

I believe that all optimizing C/C++ compilers know how to pull this trick and it is generally beneficial irrespective of the processor’s architecture. In concrete terms, here is the C code to compute the remainder of the division by some fixed divisor d : uint32_t d =. ; // your divisor > 0. if ( ( i % 3 ) = = 0 ).

C++ 279

C++ Benchmarking Hardware Testing 279

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

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

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

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

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. The SVT-AV1 encoder supports all AV1 tools which contribute to compression efficiency.

Open Source 154

Open Source Efficiency C++ Speed 154

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 62

Benchmarking Open Source C++ Cache 62

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

Highly Scalable

SEPTEMBER 18, 2012

These developments gradually highlight a system of relevant database building blocks with proven practical efficiency. In comparison with pure anti-entropy, this greatly improves consistency with a relatively small performance penalty. C) In the previous schema, failures can be handled better using the hinted handoff technique [8].

Database 213

Database Latency C++ Scalability 213

The Netflix TechBlog

FEBRUARY 13, 2020

By Aditya Mavlankar, Jan De C**k¹, Cyril Concolato, Kyle Swanson, Anush Moorthy and Anne Aaron TL; DR We need an alternative to JPEG that a) is widely supported, b) has better compression efficiency and c) has a wider feature set. High-Efficiency Video Coding ( HEVC ) is the successor of H.264, 264, a.k.a.

Code 212

Code Metrics Efficiency Open Source 212

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 141

Testing Code Design Strategy 141

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

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 199

Performance Metrics Performance Testing Testing 199

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

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

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.

C++ 112

C++ Servers Testing Code 112

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 99

Hardware Storage Big Data Blockchain 99

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

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

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 105

Performance Network Latency Servers 105

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 104

Google Open Source Programming Code 104

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 141

Cloud Serverless AWS Architecture 141

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 Monitoring Availability 40

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 76

Virtualization AWS Engineering Hardware 76

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. A “best case” scenario: DGEMM. 1 12 3 15 15 15.0156 8.0 8.056 0.056 75.0% 74.48% 0.70%. 2 24 3 27 13.5

Latency 40

Latency Hardware Code Testing 40

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 104

Network Servers Cache Traffic 104

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