Amazon Aurora offers several options for monitoring and optimizing MySQL database performance. These include Enhanced Monitoring and Performance Insights, an easy-to-use tool for assessing the load on your database and identifying slow-performing queries. In this session, learn how to tune the performance of your Aurora database with MySQL compatibility, whether your application is in development or in production.

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Using Performance Insights to
Optimize Database Performance
Phil Intihar
Marc Reilly
Database Engineers Amazon RDS
D A T 4 2 9

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Agenda
Amazon Aurora MySQL Performance Tuning
Overview of Performance Insights and Enhance Monitoring
Q&A

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What is Amazon RDS Performance Insights?
Customers asked for
• Visibility into performance of Amazon Relational Database Service
(Amazon RDS) databases
• Want to optimize cloud database workloads
• Easy tool
• Often only part-time DBA or no DBA
• Single pane of glass

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• Released 2016
• OS metrics
• Process/Thread list
• Up to 1 second granularity
First step: Amazon RDS Enhanced Monitoring

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Performance Insights dashboard

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• All engines have a connections list showing
• Active
• Idle
• We sample every second
• For each active session, collect
• SQL
• State: CPU, I/O, lock, commit log wait, and more
• Host
• User
• Expose as “average active sessions” (AAS)
What is “database load”?

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AAS rules: Using CPU count as yardstick
 AAS < 1
Database is not blocked
 AAS ~= 0
Database basically idle
Problems are in the APP not DB
 AAS < # of CPUs
CPU available
Are any single sessions 100% active?
• AAS > # of CPUs
Could have performance problems
 AAS >> # of CPUS
There is a bottleneck

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Accessing Performance Insights

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CPU bottleneck
Bottleneck

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Customer use case: CPU bottleneck
Wait
States

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Wait bottleneck

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Other dimensions

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Top host by SQL statement

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What is available
• Available
• Engines
• Amazon Aurora PostgreSQL
• Amazon Aurora MySQL 5.6 1.17.3 and higher
• Amazon RDS Postgres 10
• Amazon RDS MySQL 5.6.41+ and 5.7.22+
• Amazon RDS Oracle
• Functionality
• DB load chart
• Top N table
• Wait, user, host, SQL
• API/SDK
• Long-term data retention
• Alerts through Amazon CloudWatch

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What is coming
• Available
• Engines
• Amazon Aurora PostgreSQL
• Amazon Aurora MySQL 5.6 1.17.3 and higher
• Amazon RDS Postgres 10
• Amazon RDS MySQL 5.6.41+ and 5.7.22+
• Amazon RDS Oracle
• Functionality
• DB load chart
• Top N table
• Wait, user, host, SQL
• API/SDK
• Long-term data retention
• Alerts through Amazon CloudWatch
• Coming
• Engines
• Amazon Aurora MySQL 5.7
• Amazon RDS for MariaDB
• Amazon RDS SQL server
• Functionality
• SQL execution plan
• SQL stats
• OS and DB statistics

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Summary: Amazon RDS Performance Insights
 DB load: Average active sessions
 Identifies database bottlenecks
 Easy
 Powerful
 Top SQL
 Identifies source of bottleneck
 Enables problem discovery
 Adjustable time frame
 Hour, day, week, and longer
 Questions:
 rdspi@amazon.com

22. Thank you!
© 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Phil Intihar
Marc Reilly
Amazon RDS

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