HammerDB

FEBRUARY 25, 2021

On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute. For HammerDB both TPROC-C and TPROC-H run all of their workloads on the database being tested in SQL. The following is an example from TPROC-C from SQL Server. and the following from TPROC-H.

Programming 67

Programming Benchmarking Virtualization C++ 67

Percona

JUNE 7, 2023

Triggers on Data Definition Language (DDL) events are a powerful feature of PostgreSQL that allows you to perform additional actions in response to changes to the database schema. With event-based triggers, one can build more robust and automated database systems that can help improve the efficiency of the data.

Database 77

Database Best Practices Open Source C++ 77

Randon ASCII

OCTOBER 4, 2020

First, a bit of operating-system design context. Ideally the CPU goes to sleep when Sleep(1) is called, in order to save power, so how does the operating system (OS) wake your thread if the CPU is sleeping? If multiple threads can synchronize or coalesce their timer waits then the system becomes more power efficient.

Programming 145

Programming Games Hardware Operating System 145

All Things Distributed

DECEMBER 1, 2016

Today, we're making available broad new services which that let builders prepare and operate their applications more quickly and efficiently, and respond to changes in both their business and their operating environment, swiftly. We also added C# support for AWS Lambda.

AWS 162

AWS Development Lambda Open Source 162

Percona

DECEMBER 14, 2022

System space is at a premium i.e. it’s worth your while to manage space utilization as much as possible. But while eminently capable of performing OLAP, it’s not quite as efficient. And if the query processes 100 million rows, that’s definitely not trivial! size should at a minimum be in the tens of GB. it does well.

Database 92

Database Analytics Storage Processing 92

Testsigma

AUGUST 28, 2021

Thus, when you automate those test cases and then execute them as cross-browser and cross-device test cases, maintenance would, definitely, not be a headache. You are testing on real devices, and on the devices your customers use – but you don’t have access to all the versions of operating systems and browsers they might be using.

Testing 75

Testing Cloud C++ Operating System 75

Sutter's Mill

FEBRUARY 8, 2021

2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] 2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] How can we approximate those advantages? Drawbacks: Didn’t achieve (B).

C++ 45

C++ Lambda Efficiency Code 45

Testsigma

DECEMBER 27, 2019

If your application is compatible enough, it will definitely help in obtaining a good business. Today, considering the wide range of browsers, devices and operating systems available, cross browser testing plays a crucial role in the software development industry. But which is better? Image source. Need for Cross Browser Testing.

Testing 54

Testing Testing Tools Operating System Mobile 54

Sutter's Mill

JANUARY 25, 2021

On a humorous note, O(N) remains O(N) no matter how hard we try to make it efficient: MyAssert( std::is_sorted( std::execution::par, begin(s), end(s) ) ); // still O(N) arbitrarily expensive, but good try! If you develop your own assertion system for in-house use, support enabling/disabling at least these kinds of assertions independently. [1]

C++ 45

C++ Programming Cache Testing 45

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific. custid = C. custid , C.

C++ 109

C++ Database Servers Code 109

The Morning Paper

NOVEMBER 7, 2019

Whereas most root cause analysis systems start from the failure and work backwards, Kairux starts from the beginning of the program execution and works forwards. Before you invest any more of your time in understanding how Kairux efficiently finds this root-cause candidate, you might like to know how well it works!

Programming 47

Programming Java C++ Testing 47

SQL Performance

NOVEMBER 13, 2019

When I ran this query on my system, I got the following output: id grp datacol n - --. When I executed this query on my system for the first time, the row with id 2 got row number 2 and the row with id 11 got row number 3. Here's the definition of the POC that supports our query: CREATE INDEX idx_grp_data_i_id ON dbo.

Servers 104

Servers C++ Storage Performance 104

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific. custid = C. custid , C.

C++ 93

C++ Database Servers Code 93

KeyCDN

JUNE 25, 2020

While it was designed with Unix in mind, versions of it are available for most operating systems and Vim is also available for Android and iOS smartphones. This text editor is particularly well-suited for people who are programmers, coders, system administrators or individuals looking for a streamlined way to edit text.

Games 125

Games Open Source Availability C++ 125

Highly Scalable

MARCH 10, 2015

Most of this article represents an overview of the results published by retailers and researchers who built practical decision making and optimization systems combining abstract economic models with data mining methods. The most typical use cases for this problem are recommender systems, personalized search results ranking, and targeted ads.

Retail 152

Retail C++ Analytics Metrics 152

Randon ASCII

APRIL 17, 2018

When dealing with a closed box like Microsoft’s NTFS file system it’s trickier to know if things could be running faster than they are. In my recent experience I saw all three of these clues and that let me figure out that the cause of a broad file system slowdown was a tool that I use. Slow file deletion.

Monitoring 43

Monitoring C++ Code Processing 43

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

SEPTEMBER 2, 2021

If you wish to use CLR, you should definitely borrow code from fellow MVP Adam Machanic before thinking about writing your own (I've blogged before about re-inventing the wheel , and it also applies to free code snippets like this). He spent a lot of time fine-tuning this CLR function to efficiently parse a string. WHERE Item = c.

C++ 59

C++ Servers Testing Database 59

Brendan Gregg

SEPTEMBER 5, 2017

What follows are topics that may be of interest to anyone looking to migrate their systems and skillset: scan these to find topics that interest you. ## ZFS ZFS is available for Linux via the [zfsonlinux] and [OpenZFS] projects, and more recently was included in Canonical's Ubuntu Linux distribution: Ubuntu Xenial 16.04 Hit Ctrl-C to end. ^C

Virtualization 76

Virtualization AWS Engineering Hardware 76

The Netflix TechBlog

MARCH 25, 2019

Building and Scaling Data Lineage at Netflix to Improve Data Infrastructure Reliability, and Efficiency By: Di Lin , Girish Lingappa , Jitender Aswani Imagine yourself in the role of a data-inspired decision maker staring at a metric on a dashboard about to make a critical business decision but pausing to ask a question?—?“Can

Infrastructure 219

Infrastructure Big Data Transportation Architecture 219

Smashing Magazine

JANUARY 7, 2019

In exchange, your team gains maintainability and developer efficiency, of course. Per se, GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. The first question that’s worth asking if you can get away with using UI system fonts in the first place.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 11, 2021

The journey to fast production asset builds with Webpack is Etsy’s case study on how the team switched from using a RequireJS-based JavaScript build system to using Webpack and how they optimized theird builds, managing over 13,200 assets in 4 mins on average. GraphQL provides a performant solution to these issues. Large preview ).

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

In exchange, your team gains maintainability and developer efficiency, of course. Per se, GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. But this consideration needs to be deliberate. GraphQL provides a performant solution to these issues.

Performance 145

Performance Cache Network Metrics 145

Strategic Tech

JUNE 23, 2018

There is a high cost associated with work that leaves your team… team boundaries and software boundaries should be isomorphic” — James Lewis, Thoughtworks I’ve written and spoken a lot about architecting sociotechnical systems and how to find boundaries. And there’s more research to back it up.

Systems 40

Systems Social Media Design Media 40

Smashing Magazine

AUGUST 22, 2021

While a perfect understanding of these concepts is not needed for the rest of this post, having a common high-level definition would be good. One aspect of performance is about how efficiently a transport protocol can use a network’s full (physical) bandwidth (i.e. Congestion Control. Large preview ). Large preview ).

Performance 105

Performance Network Latency Servers 105

O'Reilly

MAY 19, 2020

Technical leads and architects (about 11%) are next, followed by software and systems architects (9+%). However, a notable minority—some 15%—occupy C-level or executive roles. It is less concerned with formal definitions 2 and captures the point-in-time totality of cloud adoption. If this seems anomalously high, it shouldn’t.

Cloud 141

Cloud Serverless AWS Architecture 141

The Agile Manager

FEBRUARY 28, 2019

Companies have lost a lot of tribal knowledge about their systems and even their core business. They need to first regain that knowledge to put themselves on a path to make their legacy systems (a) accessible, then (b) extensible, and eventually (c) malleable again. Let that sink in for a moment.

Metrics 40

Metrics Games Education Efficiency 40

Smashing Magazine

NOVEMBER 30, 2021

Adding A Dyslexia-Friendly Mode To A Website written by John C Barstow. And so we can definitely dig into that in a bunch of different angles, depending on where you want to take this conversation. Wildcard Subdomains written by Sam Poder. Improving The Performance Of Wix Websites written by Dan Shappir. How To Maintain A Large Next.js

Technology 94

Technology Technology Servers Code 94

Smashing Magazine

SEPTEMBER 6, 2021

For example, you could reduce compression efficiency , because that works better with more data. As discussed in part 2 , in HTTP/2, this multiplexing is steered using its prioritization system. As we also saw, however, this system was very complex , causing it to often be badly used and implemented in practice (see the image below).

Network 104

Network Servers Cache Traffic 104

The Netflix TechBlog

SEPTEMBER 10, 2019

Previous XP architecture: all systems are engineering-owned and not easily introspectable Reimagining our Infrastructure: Democratization Across 3 Tracks We are reimagining new infrastructure that makes the scientific development experience better. It centralizes metrics definitions which used to be scattered across many teams.

Metrics 215

Metrics Architecture Infrastructure Innovation 215

High Scalability

NOVEMBER 25, 2019

He and his colleagues spend their productive hours scaling large distributed file systems. Our only option was to roll up our sleeves and build basic cloud file system components such as object store ourselves. Java used to power core file system code. What is the name of your system and where can we find out more about it?

Architecture 52

Architecture Cache Azure Storage 52