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Impact of Querying Table Information From information_schema

Percona

A lot of useful information can be retrieved from this schema, for example, table metadata and foreign key relations, but trying to query I_S can induce performance degradation if your server is under heavy load, as shown in the following example test. The same tests have been executed in Percona Server for MySQL 5.7

Cache 98
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Percona Toolkit – A Quick Introduction to Summary

Percona

Caches | 12.4G 2004l# Percona Toolkit System Summary Report ###################### Date | 2023-09-25 14:43:34 UTC (local TZ: CDT -0500) Hostname | testbox Uptime | 44 min, 1 user, load average: 0.47, 0.67, 0.57 Platform | Linux Release | Ubuntu 22.04.3 LTS (jammy) Kernel | 6.2.0-33-generic virtual = 2.2G Shared | 475.0M Buffers | 3.8G

Cache 96
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Azure Well-Architected Framework: What it is and how to tame it with AI and automation

Dynatrace

Missing caching layers. Some principles Microsoft provides to help organizations across this area include: Define and test availability targets such as service level agreements (SLAs) and SLOs. Figure 5 – Dynatrace measures over 2000 different metrics ready for use as dedicated SLIs. Too much data requested from a database.

Azure 190
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AB Testing?—?So You Know What Really Works

Adrian Cockcroft

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
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How Many Warehouses for the HammerDB TPC-C Test?

HammerDB

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
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High Memory Usage on ProxySQL Server

Percona

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 58
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ChatGPT Won’t Replace MySQL DBA – An Example of a Question About Encryption at Rest

Percona

key id, key user, key type, together with keys themselves) into the cache, unless MySQL is restarted, or you want to rotate the master key (you won’t though, as you know you have removed the keyring_file), it will not need the keyring file anymore. row Database: test Create Database: CREATE DATABASE `test` /*!40100

Database 114