performance_schema

Table of contents

• Review
• One month later
• Size of the tables
• Process list
• Global variables
• Metadata Lock and InnoDB Transaction Lock
• Global status

Review

Inhaltsverzeichnis

• Rückblick
• Einen Monat später
• Grösse der Tabellen
• Prozessliste
• Globale Variablen
• Metadata Lock und InnoDB Transaction Lock
• Globaler Status

Rückblick

Table of contents

• Functionality of dbstat
• How does dbstat work
• How to install dbstat
• Query dbstat
  • table_size
  • processlist
  • trx_and_lck
  • metadata_lock

Inhaltsverzeichnis

• Funktionalität
• Wie funktioniert dbstat
• Installation
• Abfrage
  • table_size
  • processlist
  • trx_and_lck
  • metadata_lock

The MySQL sys Schema is a cool thing and was mostly developed by Mark Leith and Jesper Wisborg Krogh from Oracle/MySQL.

MySQL has introduced the PERFORMANCE_SCHEMA (P_S) in MySQL 5.5 and made it really usable in MySQL 5.6 and added some enhancements in MySQL 5.7 and 8.0.

The FOSDEM 2016 in Brussels (Belgium) January 29/30 is over and was very interesting and IMHO a big success.

For all those who could not participate at FOSDEM 2016 our presentation slides about PERFORMANCE_SCHEMA and sys schema are available here:

PERFORMANCE_SCHEMA and sys schema - What can we do with it? (PDF, 406 kbyte)