Percona

JULY 7, 2023

HA in PostgreSQL databases delivers virtually continuous availability, fault tolerance, and disaster recovery. Also, in general terms, a high availability PostgreSQL solution must cover four key areas: Infrastructure: This is the physical or virtual hardware database systems rely on to run. there cannot be high availability.

Availability 81

Availability Open Source Architecture Database 81

Nick Desaulniers

APRIL 6, 2020

My blog has been quieter than I would have liked; hopefully I can find more time to document some of these, maybe in series form. halt (); Some sort of very early exception handler; better to sit busy in an infinite loop than run off and destroy hardware or corrupt data, I suppose. This is documented further in linux-insides.

C++ 67

C++ Hardware Code Virtualization 67

HammerDB

FEBRUARY 25, 2021

To benchmark a database we introduce the concept of a Virtual User. We could use processes, however given we may want to create hundreds or thousands of virtual users multithreading is the best approach to implement a Virtual User. Basic Benchmarking Concepts. The Python GIL. Tcl Multithreading in parallel.

Programming 67

Programming Benchmarking Virtualization C++ 67

Percona

APRIL 17, 2023

Operating System (OS) settings Swappiness Swappiness is a Linux kernel setting that influences the behavior of the Virtual Memory manager when it needs to allocate a swap, ranging from 0-100. On the other hand, MongoDB schema design takes a document-oriented approach. Without further ado, let’s start with the OS settings.

Best Practices 52

Best Practices Design Tuning Database 52

HammerDB

NOVEMBER 22, 2021

The example shows a TPROC-C workload running with 4 Active Virtual Users. adds the functionality to view the PostgreSQL active session history for benchmark workloads, enabling the user to find and diagnose bottlenecks in hardware and software configurations in a PostgreSQL environment. Drag out Metrics tab. Workload running.

Metrics 62

Metrics Benchmarking C++ Database 62

All Things Distributed

SEPTEMBER 4, 2017

Both concepts are virtually omnipresent and at the top of most buzzword rankings. The management consultants at McKinsey expect that the global market for AI-based services, software and hardware will grow annually by 15-25% and reach a volume of around USD 130 billion in 2025.

Artificial Intelligence 149

Artificial Intelligence Transportation Education Airlines 149

SQL Server According to Bob

DECEMBER 18, 2018

SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Refer to the ISO documentation on data integrity for complete details. Pradeep, Venu and Suresh handling support issues. Device Flush.

Servers 90

Servers Media Cache Storage 90

Brendan Gregg

SEPTEMBER 5, 2017

Linux has been adding tracing technologies over the years: kprobes (kernel dynamic tracing), uprobes (user-level dynamic tracing), tracepoints (static tracing), and perf_events (profiling and hardware counters). There's a lot about Linux containers that isn't well documented yet, especially since it's a moving target.

Virtualization 76

Virtualization AWS Engineering Hardware 76

HammerDB

DECEMBER 5, 2020

First of all it has always been clear in the HammerDB documentation that the TPROC-C/TPC-C and TPROC-H/TPC-H workloads have not been ‘real’ audited and published TPC results instead providing a tool to run workloads based on these specifications. XML Connect Pooling (test distributed clusters).

C++ 40

C++ Benchmarking Virtualization Open Source 40

SQL Performance

JULY 3, 2019

The documentation for TransactionScope pretty quickly ruled that out as a possible cause of this. The documentation for the ORM they are using clearly states that when any multi-entity action occurs, it is performed inside of a transaction. The application enlisting a SqlTransaction() on the connection.

Servers 64

Servers Hardware Code Virtualization 64

Adrian Cockcroft

NOVEMBER 13, 2023

In the simplest case, you have a growing workload, and you optimize it to run more efficiently so that you don’t need to buy or rent additional hardware, so your carbon footprint stays the same, but the carbon per transaction or operation is going down.

Energy 52

Energy Cloud Traffic Transportation 52

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? Let us have a look at the most popular types of mobile testing for applications and hardware.

Mobile 82

Mobile Testing Hardware C++ 82

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document.

Servers 40

Servers Cache Media Hardware 40

Dotcom-Montior

DECEMBER 8, 2021

You cannot virtualize everything…yet. Software services still require physical devices and hardware for them to function. Like Slack, Microsoft is a real-time communication application that offers features like online messaging, video chat, and document sharing. Asset Management.

Social Media 90

Social Media Monitoring Latency DevOps 90

KeyCDN

JULY 2, 2020

How standards came about In March of 1989, Tim Berners wrote a document called "Information Management: A Proposal" in which he laid out his vision for what would become the World Wide Web. This language would have to exist regardless of hardware, location, culture, political beliefs, etc.

Internet 56

Internet Internet Best Practices Website 56

Alex Russell

APRIL 29, 2021

Now in development in WebKit after years of radio silence, WebXR APIs provide Augmented Reality and Virtual Reality input and scene information to web applications. is access to hardware devices. This allows customisation and use of specialised features without custom, proprietary software for niche hardware. Shape Detection.

Media 145

Media Games Education Engineering 145

SQL Performance

JUNE 21, 2019

Some retired documentation from Microsoft stated that index fragmentation can have a negative impact from 13-460% depending on the size of the environment and the level of fragmentation. If you are mostly virtualized on machines with 8 or fewer logical processors with a default MAXDOP, you're probably in OK.

Servers 49

Servers Azure Hardware Database 49

Randon ASCII

APRIL 14, 2020

I tried to tap the control key (virtual key code 162) once a second until the password input field appeared. Is a second or more of busy waiting really the only way to get my hardware going? The table at the top ( Generic Events ) is showing keystrokes, as recorded by UIforETW. This is intensely logical, but quite confusing.

Programming 89

Programming Processing Systems Hardware 89

Abhishek Tiwari

JULY 12, 2018

A data pipeline is a software which runs on hardware. The software is error-prone and hardware failures are inevitable. In some cases, this can be enhanced by combining data virtualization techniques with microservices architecture. A data pipeline can process data in a different order than they were received.

Latency 63

Latency Analytics Scalability Engineering 63

Nick Desaulniers

MAY 30, 2016

Someone from the back shouts virtual machines then ducks as a chair is thrown. This document. Companies want to sell chips that have larger word sizes to address more memory, but early adopters don’t want to buy a computer where there favorite application hasn’t been compiled and thus doesn’t exist on yet. and inttypes.h

C++ 59

C++ Programming Code Hardware 59

Percona

AUGUST 27, 2018

Essentially, you can assign a thread to a specific virtual CPU. MySQL 8 introduced a feature that is explained only in a single documentation page. assigning to a specific CPU) is a manageable resource, represented by the concept of “virtual CPU” as a term that includes CPU cores, hyperthreads, hardware threads, and so forth.

Tuning 44

Tuning Virtualization Testing Servers 44

Dynatrace

AUGUST 5, 2019

Lift & Shift is where you basically just move physical or virtual hosts to the cloud – essentially you just run your host on somebody else’s hardware. If you have a large relational database that costs you a lot of money (hardware & license) and you plan to lift & shift it – why not take the chance and do two things.

Cloud 31

Cloud Traffic Database Network 31

Smashing Magazine

SEPTEMBER 21, 2021

Operating systems have often three layers, more or less coupled with each other: The kernel , which directly dabbles with the hardware of your computer; The shell , an interface for you, or some applications, to interact with the kernel; A display layer on top, like a desktop manager or a tiling windows manager. But first, a bit of theory.

Development 98

Development Energy Programming Efficiency 98

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information ​​ that is contained ​​ in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. After reading ​​ this document you will better understand SQL Server I/O needs and capabilities.

Servers 40

Servers Cache Database Media 40

SQL Server According to Bob

JULY 13, 2016

desktop machine (I won’t tell you the hardware details. In addition, the Download Media option includes a link to create a virtual machine in Azure for SQL Server 2016. Use the Download Media option to save the media files for future installations (For example, the ISO is perfect for Virtual Machines not connected to the Internet).

Servers 40

Servers Media Engineering Virtualization 40

O'Reilly

NOVEMBER 28, 2023

And there are tools for archiving and indexing prompts for reuse, vector databases for retrieving documents that an AI can use to answer a question, and much more. That pricing won’t be sustainable, particularly as hardware shortages drive up the cost of building infrastructure. It’s also well suited to writing a quick email.

Open Source 108

Open Source Artificial Intelligence Google Infrastructure 108

All Things Distributed

JANUARY 18, 2012

This is not just predictability of median performance and latency, but also at the end of the distribution (the 99.9th percentile), so we could provide acceptable performance for virtually every customer. After the successful launch of the first Dynamo system, we documented our experiences in a paper so others could benefit from them.

Scalability 167

Scalability Database Ecommerce Latency 167

Smashing Magazine

JANUARY 11, 2021

You can download the spreadsheet as Google Sheets, Excel, OpenOffice document or CSV. On the other hand, we have hardware constraints on memory and CPU due to JavaScript parsing and execution times (we’ll talk about them in detail later). Site speed topography , with key metrics represented for key pages on the site. Large preview ).

Performance 145

Performance Cache Media Metrics 145