Using PEM to understand and improve performance in Postgres: Postgres Tuning Wizard and Performance Diagnostics
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This document provides an agenda for a webinar on using PEM to understand and improve performance in Postgres. The webinar will cover an introduction to PEM, performance monitoring, database tuning using the tuning wizard and performance diagnostics, EDB wait states, and include a demo. PEM allows monitoring of hosts, databases, schemas and workloads to identify performance bottlenecks. The tuning wizard recommends configuration optimizations. Performance diagnostics provide insight into wait events slowing queries using EDB wait states.
Using PEM to understand and improve performance in Postgres: Postgres Tuning Wizard and Performance Diagnostics
- 1. Using PEM to understand and improve performance in Postgres: Postgres Tuning Wizard and Performance Diagnostics Ashesh Vashi, Bruce Momjian, Marc Linster Hosted by: Courtney Brown
- 2. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.2 • Slides and recording will be available in next 24 hours • Submit questions via GotoWebinar – will be answering at end • We will be sharing info about EDB and Postgres later Welcome – Housekeeping Items
- 3. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.3 Webinar Series Every other Monday at 8:00 AM PDT/ 11:00 AM EDT 16:00 BST/ 17:00 CET June 3 2020 New Approaches to Integrating Oracle and Postgres Database Strategies June 17 2020 How to Design for Database High Availability July 15 2020 Using PEM to understand and improve performance in Postgres: Postgres Tuning Wizard and Performance Diagnostics July 29 2020 How to Harness The Power of New and Improved Features in PostgreSQL 13 August 12 2020 EDB Replicate
- 4. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.4 • Introduction to PEM • Performance Monitoring • Database Tuning • Tuning Wizard • Performance Diagnostics • EDB Wait States • Demo Agenda
- 5. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.5 Introduction to PEM
- 6. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.6 What can PEM do?
- 7. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.7 PEM Architecture
- 8. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.8 Market Landscape
- 9. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.9 Performance Monitoring Monitoring Target Probes Metrics Type of monitored data Host/Operating System 10 47 CPU Usage, Disk Busy Info, Disk Space, IO Analysis, Load Average, Memory Usage, Network Statistics, OS Information, OS Statistics, Server Auto Discovery Database Server/Instance 27 196 Background Writer Statistics, Blocked Session Information, Data and Log File Analysis, Database Frozen XID, Database Size, Database Statistics, EDB Audit Configuration, Failover Manager Cluster Info, Failover Manager Node Status, Lock Information, Number of Prepared Transactions, Number of WAL Files, Database, Tablespace, PG HBA Conf, Server Information, Server log Configuration, Session Information, Session Waits, Settings, Streaming Replication, Streaming Replication Database Conflicts, Streaming Replication Lag Time, System Waits, Tablespace Size, User Information, WAL Archive Status Database 15 90 Function Statistics, Index Size, Index Statistics, Materialized View Bloat, Materialized View Frozen XID, Materialized View Size, Object Catalog: Extension, Object Catalog: Schema, Slony Replication, SQL/Protect, Table Bloat, Table Frozen XID, Table Size, Table Statistics, xDB Replication Schema 6 26 Foreign Key, Function, Index, Sequence, Table, View
- 10. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.10 Instance Tuning • Tuning Wizard • Postgres Expert • Capacity Manager (Capacity Planning) Database Tuning Workload/Schema Tuning • Postgres Expert • Explain plan analyzer (in the query tool) • SQL Profiler • Performance Diagnostics (Wait Events)
- 11. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.11 • Reviews the database server installation, and recommends a set of configuration options that will help tune the installation best suited for your workload • Machine Utilization + Dedicated, Work station, Developer workstation • Workload + OLTP, Mixed, Data warehouse • effective_cache_size, maintainance_work_mem, max_wal_size, min_wal_size, random_page_cost, shared_buffers, wal_buffers, work_mem Tuning Wizard
- 12. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.12 • An active session can be utilizing a CPU or waiting for an internal event/action to happen • Wait Events (EDB Wait States) • pg_stat_activity view - wait_event_type, wait_event Performance Diagnostics • LWLock • Lock • BufferPin • Activity • Extension • Client • IPC • Timeout • IO
- 13. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.13 ● EDB Wait States Background Worker (EWSBW) ○ EDB Postgres Advanced Server 11+ ○ Probes each of the running sessions at regular intervals ○ Collection information for every sessions ■ Database, User, Query, Wait Events ● Wait States Interface ○ edb_wait_states_data ○ edb_wait_states_queries ○ edb_wait_states_sessions ○ edb_wait_states_samples EDB Wait States
- 14. © Copyright EnterpriseDB Corporation, 2020. All rights reserved.14 DEMO
- 15. ONLY OPEN SOURCE BASED RDBMS IN GARTNER MQ EDB recognized 7 years in a row on Gartner’s Magic Quadrant 15 CONFIDENTIAL © Copyright EnterpriseDB Corporation, 2020. All rights reserved.
- 16. Customers working SMARTER, reducing RISK and being more PRODUCTIVE with EDB. OVER 4,000 CUSTOMERS U.S Customers EMEA Customers APAC Customers 102 of the Fortune 500 337 of the Forbes Global 2000
- 17. EDB OPEN SOURCE LEADERSHIP NAMED EDB OPEN SOURCE COMMITTERS AND CONTRIBUTORS CORE TEAM ● ● ● MAJOR CONTRIBUTORS CONTRIBUTORS Akshay Joshi Amul Sul Ashesh Vashi Dilip Kumar Jeevan Ladhe Mithun Cy Devrim Gündüz Amit Kapila Bruce Momjian Dave Page Robert Haas Ashutosh Sharma Rushabh Lathia - designates committers
- 18. EDB Postgres Database 24/7 Global Support Professional Services Postgres Contributions Tools & Innovation Security/performance
- 19. Thank You EDB supercharges Postgres to help our customers overcome these challenges.