Foglight. Resolving the Database Performance. Finding clues in your DB2 LUW workloads

Transcription

1 Foglight Resolving the Database Performance Blame Game Finding clues in your DB2 LUW workloads

2 Agenda Introductions Database Monitoring Techniques Understand normal (baseline) behavior Compare DB2 instance, partition, or database query workloads over different time ranges Understand the performance impact of system and database change Monitor more than just the instance/partition/database Extend database performance data to other teams 2 Confidential

3 Speaker Introductions Tim Fritz Solution Architect with Dell Software (formerly Quest) Pre- and Post-Sales Consulting Experience with DB2 spanning four decades Past speaker at IDUG and regional DB2 user groups 3 Confidential

4 Our Company and Solutions DELL SOFTWARE >> Where does DB2 fit in there? Quest Software tools are now part of Dell Foglight, Performance Analysis, Spotlight, Toad All this for Oracle and SQL Server, too 4 Confidential

5 Your Roles? Look Familiar? 5 Confidential

6 Topic Introduction DBAs get blamed for everything Methods and techniques for: Diagnosing a database problem down to its root cause, or better yet Proving that a perceived performance issue is not the fault of the database How Dell Software helps: Foglight for Databases (Oracle, SQL Server, DB2, Sybase) 6 Confidential

7 Understanding Normal (Baseline) Behavior The database is slow What does slow mean? How many of you know how your database or partition usually performs right now? In defending database performance, it is critical to be able to show whether or not a database is performing the way it usually does 7 Confidential

8 Understanding Normal (Baseline) Behavior Baselining is critical. Unfortunately it is also hard! Measure key performance metrics 24x7: # of connections CPU % Disk Latency Memory Metrics Network Throughput Database Wait Events 8 Confidential

9 Understanding Normal (Baseline) Behavior For each collected metric: Average and Range Account for different times, days, weeks Baseline will need to be re-evaluated periodically 9 Confidential

10 How Can Dell Software Help? Foglight for Databases: IntelliProfile Time sensitive, baseline ranges of key performance metrics Baselines are automatically calculated, and constantly adjusted Immediately understand whether performance is what it usually is 10 Confidential

11 Foglight for Databases 11 Confidential

12 Compare Database Workloads Over Time How many of you have asked: What are the worst performing SQL statements in this database? Top SQL doesn t necessarily answer the right question The system was performing great yesterday, terrible today, why? Which SQL Statements deviated the most? 12 Confidential

13 How Can Dell Software Help? Foglight for Databases: Comparison Reporting Compare query workloads over different time ranges Looks at the statements, users, programs, etc that differed in their performance 13 Confidential

14 Foglight for Databases 14 Confidential

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16 Understanding the Impact of Change Who has access to the database and host? DBAs Developers Sysadmins How many times has a problem been caused by something that has changed? Somebody added an index? VMWare administrator added/removed CPU s or Memory 16 Confidential

17 Understanding the Impact of Change One of the quickest things to rule in or out Look at audit data, if you have it Compare and sync Trust no one! 17 Confidential

18 How Can Dell Software Help? Foglight for Databases: Change Tracking Foglight will collect and store changes: System (Operating System and Hardware, including VM changes) Database and Database Manager Configuration parameters Database Schema (DDL changes to tables, views, indexes, triggers, etc ) Access Plans (Same query ran w/ different plans) Visualize the impact that these changes have on performance 18 Confidential

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21 Wait Event Analysis after Changes 21 Confidential

22 Monitor More Than Just The Database In today s IT world, environments have become very complex 22 Confidential

23 Look Familiar? 23 Confidential

24 Monitor More Than Just The Database It is more important than ever to complement database monitoring with the performance data coming from additional systems Vertical: DB -> Guest -> Host -> Network -> Storage Horizontal: End User -> Web -> App -> DB 24 Confidential

25 How Can Dell Software Help? Foglight provides integrated cartridges that can complement database monitoring with additional relevant data Built in and custom dashboards allow for helpdesk, app owners, sysadmins, etc to immediately understand where a problem is coming from 25 Confidential

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28 Extending Database Monitoring Historically it has been difficult, or even impossible, to extend database monitoring data to other teams: Query monitor functions?? Which ones? How? Many monitoring solutions require database, and possibly even administrative access: Do you need to provide elevated privs for users? Having an efficient process for sharing of information across teams is critical: Who decides what to share? How is that data delivered; how are the metrics interpreted? Report formats, on screens, to make it easy to defend (or accuse) the database. 28 Confidential

29 How Can Dell Software Help? Foglight for Databases: Custom Dashboards and Roles In Foglight, user roles are created that allow/restrict access to certain dashboards DBA can create a dashboard for self service delivery of metric data to: Executives Managers Application Developers Storage Admins Etc And extend your monitoring easily via SQL 29 Confidential

30 Dell Foglight delivers integrated Application Performance Monitoring 30 Confidential

31 DEMO

32 Foglight Application Performance Monitoring Architecture Web Servers Application Servers Quest Collectors (Local or Remote) Switch Internet/ WAN End Users and Transaction Players Foglight Experience Monitor & Experience Viewer Appliances Foglight Management Server (FMS) including the Performance Management Database (PMDB) 32 Confidential

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34 For More Information About Visit Visit the Foglight Community: 34 Confidential

35 Thank you 35 Confidential 9/11/2013