HammerDB

JULY 14, 2021

However, as the two databases diverged from a shared common codebase, this presented a challenge in that it was not possible to modify the workload for MySQL or MariaDB without also changing the other. Checking database library for MariaDB Error: failed to load mariatcl - couldn't load file "/home/HammerDB-4.2/lib/mariatcl0.1/libmariatcl0.1.so":

Testing 57

Testing C++ Virtualization Tuning 57

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually. And did I mention they are open source?!

Cache 96

Cache Database Virtualization Servers 96

HammerDB

JUNE 22, 2023

Configuring the Jobs Database The base configuration is set in the xml files in the config directory with the jobs SQLite database being set in the commandline section of generic.xml by specifying the filename. Copyright (C) 2003-2023 Steve Shaw Type "help" for a list of commands Initialized new Jobs on-disk database /opt/HammerDB-4.8/DATA/hammer.db

Benchmarking 57

Benchmarking C++ Virtualization Database 57

Percona

JANUARY 5, 2023

In this blog, I will share a solution to remove this space and remove rows from tables in a few seconds regardless of the size of a table without causing any additional load on the database using table partitions. The first approach that comes to anyone’s mind for deleting the row is using a DELETE query in SQL. ibd -rw-r --. frm -rw-r --.

Traffic 59

Traffic Engineering Speed Storage 59

SQL Server According to Bob

JUNE 3, 2016

The following chart shows the same 1TB database testing. ‘It Just Runs Faster’ – Out of the box SQL Server 2016 DBCC provides you better performance, scale while shrinking your maintenance window(s.). The DBCC CheckDB demonstration loads a table and demonstrates the performance improvement. SQL Server 2014.

Hardware 40

Hardware Cache Servers Software Engineering 40

SQL Performance

FEBRUARY 22, 2021

The official documentation for sys.sysprocesses warns: This SQL Server 2000 system table is included as a view for backward compatibility. But dbid is unreliable and marginally useful anyway, particularly for cross-database queries; there's much better info in sys.dm_tran_locks. Sure, sys.sysprocesses has dbid and waittime.

Latency 57

Latency Servers Monitoring Systems 57

HammerDB

OCTOBER 17, 2018

However most people use HammerDB with keying and thinking time disabled and therefore each virtual user can approximately drive the CPU resources of one CPU core on the database server. Note that if using CPUs with Hyper-Threading allow for additional CPU capacity, so size as if there were 35% more physical cores.

C++ 40

C++ Testing Virtualization Cache 40

CSS - Tricks

OCTOBER 16, 2019

By any metric, images are a major slice of the resources on websites, and we're notoriously bad at optimizing them and doing all the things we could to lower the performance hit from them. I just mentioned filtering the HTML for images in my database. There are all these sites out there that want to help you with your images.

Media 44

Media Servers Database Design 44

SQL Performance

AUGUST 2, 2019

I have been making the same recommendations about tempdb since I started working with SQL Server over 15 years ago, when I was working with customers running version 2000. ALTER DATABASE [ WideWorldImporters ] SET QUERY_STORE = ON ; GO. If we look at individual query performance: SELECT. [ Additional Considerations.

Servers 95

Servers C++ Testing Systems 95

Percona

MARCH 8, 2023

Over the years of being a DBA, I had to deal with all kinds of problems in the database. Still, the users keep falling into this trap, maybe because of a poorly configured database, a change in the application components, or just because of a sudden increase of connections in the application. A lot has been written about this error.

C++ 91

C++ Database Servers Open Source 91

The Netflix TechBlog

JULY 26, 2021

Such a paradigm aspires to assist front-line operations personnel and stakeholders in “running the business”²; performing their tasks through means such as ad hoc analysis, decision-support, and tracking (of tasks, assets, schedules, etc). In the initial stage, data consumers set up ETL pipelines directly pulling data from databases.

Big Data 253

Big Data Government Analytics Processing 253

Percona

AUGUST 29, 2023

A single command to deploy the operator would be: kubectl apply -f [link] --server-side Init SQL script Init SQL allows the creation of the database cluster with some initial data in it. HINT: has a stanza-create been performed? You can find all examples from this blog post in this GitHub repository. Search for init SQL.

Storage 91

Storage Database Media Open Source 91

VoltDB

APRIL 2, 2024

ACID transactions solve many problems when implemented to the letter but have been engaged in a push-pull with performance trade-offs ever since. A transaction is a bundling of one or more operations on database state into a single sequence. ACID consistency is all about database rules. WHAT DOES ACID STAND FOR? What is CAP?

Education 52

Education C++ Database Design 52

Percona

MAY 15, 2023

The main reason behind this is that MySQL is a relational database system (RDBMS), and any data that is going to be written in it must respect the RDBMS rules. In the MySQL open source ecosystem, we have only two consolidated ways to perform sharding — Vitess and ProxySQL. This is it. The POC Why this POC?

Traffic 122

Traffic Scalability Database Servers 122

SQL Server According to Bob

JANUARY 11, 2020

KB sectors run on smaller sectors   14 System and sample databases   15 Determining the formatted sector size of database   15 What sector sizes does SQL Server support? KB boundary   12 Larger transaction logs   13 Restore and attach   14 Format for 4 ?KB

Servers 40

Servers Cache Database Media 40

SQL Performance

OCTOBER 7, 2020

For more background on these performance spools see my prior article. The first three items are most often performance spools, though they can be introduced for other reasons (when they may be eager as well as lazy). The documentation says only the following operators can rewind: Table Spool. Row Count Spool. Nonclustered Index Spool.

Servers 106

Servers Cache Azure Performance 106

Dynatrace

APRIL 21, 2022

Analyzing user experience to ensure uniform performance after migration. Performance efficiency. Some principles Microsoft provides across this area include: Choosing the right resources aligned with business goals that can handle the workload’s performance. Performance Efficiency. Operational excellence.

Azure 181

Azure Monitoring Virtualization Metrics 181

SQL Server According to Bob

JANUARY 11, 2020

Microsoft SQL Server I/O Basics Author: ​​ Bob Dorr, Microsoft SQL Server Escalation Published: ​​ December, 2004 SUMMARY: ​​ Learn the I/O requirements for Microsoft SQL Server database file operations. This will help you increase system performance and avoid I/O environment errors.

Servers 40

Servers Cache Media Hardware 40

Testsigma

FEBRUARY 6, 2020

Defects are found and fixed, it is performed at later stages of the Software Lifecycle. Examples of Dynamic Testing- Unit testing, System testing, Integration testing, Performance testing, Security testing. Grey Box Testing proves to be effective while performing Penetration Testing and Integration Testing. Testing Types.

Software 69

Software Software Testing Scalability 69

The Netflix TechBlog

FEBRUARY 13, 2020

JPEG can ingest RGB data and transform it to a luma-chroma representation before performing lossy compression. The JPEG 2000 format , based on the discrete wavelet transform (DWT), was introduced as a successor to JPEG in the year 2000. Webp does not have all the flexibilities of JPEG 2000. 264, a.k.a.

Code 212

Code Metrics Efficiency Open Source 212

HammerDB

DECEMBER 14, 2022

The TPC publishes an official Docker image on Docker Hub to enable the rapid deployment and testing of databases with HammerDB. This image includes example scripts to build schemas and test your databases with a single command. hammerdb>librarycheck Checking database library for Oracle Success. Database Configuration.

C++ 62

C++ Virtualization Database Benchmarking 62

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. Durability: “In database systems , durability is the ACID property which guarantees transactions that have committed will survive permanently.

Servers 90

Servers Media Cache Storage 90

The Morning Paper

NOVEMBER 22, 2020

Is there anything more terrifying, and at the same time more useful, to a database vendor than Kyle Kingsbury’s Jepsen ? As the abstract to today’s paper choice wryly puts it, “ experience shows that many databases do not provide the isolation guarantees they claim.” Giving the database the benefit of the doubt. Adya et al.

Database 58

Database Processing Testing Website 58

Testsigma

FEBRUARY 27, 2021

We all know how important it is to perform unit testing on separate modules or “units of codes”. That’s why it’s essential that we perform Android integration testing for all the critical modules in our application. The test cases required to perform the above-mentioned integration testing can be easily created with just a few steps.

Testing 52

Testing Performance Testing Mobile Software 52

Alex Russell

APRIL 29, 2021

Classics of the genre include: Apple's just focused on performance! The Performance Argument. As an engineer on a browser team, I'm privy to the blow-by-blow of various performance projects, benchmark fire drills, and the ways performance marketing (deeply) impacts engineering priorities. Steve & Tim's Close-up Magic.

Media 145

Media Games Education Engineering 145

Testsigma

NOVEMBER 16, 2021

Even my data is synced over to different platforms quickly which means I am working on the same database for each of my applications. How should enterprises perform cross-browser testing? The most important aspect of performing cross-browser testing is the platform. Platform – A most important aspect. Real mobile devices.

Testing 52

Testing Website Small Business Internet 52

Alex Russell

JUNE 20, 2020

built-in relational SQL database engines. Absent compelling content and attentive security and performance focus, it soon retreated to the server. [6]. Meta-platforms enter this calculus with a deficit to maximum capability and performance but (hopefully) gains to reach. high-color image raster. floppy/CD/DVD). printer support.

Hardware 55

Hardware Games Java Media 55

Highly Scalable

MARCH 10, 2015

The goal is to find a set of the most promising candidates who should receive the resource in order to maximize the overall performance of the targeted group of customers. Moreover, gross margin is not the only performance metric that is important for retailers. The resource can be homogenous (i.e. Applications. Applications.

Retail 152

Retail C++ Analytics Metrics 152