Adrian Cockcroft

MARCH 21, 2020

AB Testing?—?So The first thing I found was that every user visible change we made went through an A/B test. An oft-quoted study by Microsoft Bing found that of the changes they test, one-third prove effective, one-third have neutral results, and one-third have negative results. So You Know What Really Works ??Castillo

Testing 52

Testing Tuning Database Cache 52

Alex Russell

APRIL 29, 2021

Thanks to the Web Platform Tests project and wpt.fyi , we have the makings of an answer for the first: Tests that fail only in a given browser. wpt.fyi 's new Compat 2021 dashboard narrows this full range of tests to a subset chosen to represent the most painful compatibility bugs : Stable-channel Compat 2021 results over time.

Media 145

Media Games Education Engineering 145

HammerDB

OCTOBER 17, 2018

The official TPC-C test has a fixed number of users per warehouse and uses keying and thinking time so that the workload generated by each user is not intensive. With HammerDB this home warehouse is chosen at random at the start of the test and remains fixed. Additionally it is important to understand the workload.

C++ 40

C++ Testing Virtualization Cache 40

SQL Performance

MAY 22, 2019

It’s one of the things we look at during a health audit, and Kimberly has a great query from her Plan cache and optimizing for adhoc workloads post that’s part of our toolkit. About 1GB of the plan cache is for prepared and procedure plans, and they only take up about 300MB worth of space. DBCC FREEPROCCACHE ; GO. EXEC dbo. [

Cache 54

Cache Performance Hardware Servers 54

KeyCDN

OCTOBER 24, 2018

Back in 1984, FUNET was launched to connect Finnish universities and in 2000 internet in Finland was launched commercially. This is a massive increase from year 2000 when only 37.2% Growth Of Internet in Finland The number of Internet users in Finland correlates very closely with the current number of residents. penetration rate.

Internet 48

Internet Internet Speed Network 48

SQL Server According to Bob

JUNE 3, 2016

The following chart shows the same 1TB database testing. Note: You may need to execute the dbcc a second time so buffer cache is hot, eliminating I/O sub-system variants. iID int NOT NULL IDENTITY(1,1) PRIMARY KEY CLUSTERED, strData nvarchar(2000) NOT NULL. ). MultiObjectScanner = Older design. CheckScanner = New design.

Hardware 40

Hardware Servers Cache Software Engineering 40

Percona

DECEMBER 5, 2022

ProxySQL is a very useful tool for gaining high availability, load balancing, query routing, query caching, query rewriting, multiplexing, and data masking. Your MySQL connection id is 1 Server version: 5.5.30 (ProxySQL Admin Module) Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Commands end with ; or g.

Servers 60

Servers Cache C++ Metrics 60

SQL Server According to Bob

JANUARY 11, 2020

Books Online (BOL) References: ​​ All BOL references cited in this paper are taken from the Microsoft SQL Server 2000 Books Online site (updated to include SP3 functionality), which can be found at: [link] Click the Product Documentation link. This cache is often supported by a battery-powered backup facility.

Servers 40

Servers Cache Media Hardware 40

Percona

JUNE 15, 2023

Sometimes we might need to install/upgrade Percona Server for MySQL /MySQL 8 to a particular version in a test or production environment. Let’s start and test on Debian 11. Refresh the local cache to update the package information $ sudo apt update Hit:1 [link] bullseye-security InRelease Hit:2 [link] bullseye InRelease 1.5

Servers 98

Servers C++ Database Systems 98

SQL Server According to Bob

JANUARY 11, 2020

The ​​ SQL Server 2000 I/O Basics ​​ document is a prerequisite to ​​ the information contained in this ​​ document. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

Servers 40

Servers Cache Database Media 40

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. Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. 4 Socket, TPCC.

Servers 90

Servers Media Cache Storage 90

Percona

MAY 15, 2023

One example could be using an RDBMS for most of the Online transaction processing ( OLTP) data shared by country and having the products as distributed memory cache with a different technology. We have: The application(s) node(s) — it is really up to you if you want to test with one application node or more. UUID(), ?, ?,

Traffic 144

Traffic Scalability Database Servers 144