What's New in Mysql Workbench

Looking at Performance - What’s new in MySQL Workbench 6.2 Mario Beck MySQL Sales Consulting Manager EMEA The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

Very Brief Product History & Overview What’s New – Performance Tools Performance Dashboard Performance Schema Reports and Sys Schema Visual Explain 2 Request Results Status Details View Other related extras and tips

Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 3 MySQL Workbench Overview Design, Develop, Administer, Migrate And now adding – Performance • MySQL Database IDE • Millions of Users • Millions of Downloads • Windows, OS X, Linux

Workbench Workbench 5.2 6.0 Workbench New GUI Design 5.0/5.1 fabFORCE.net Admin Enhanced EER Designer Develop Workflow DBDesigner4 Migrate Windows Native X-Platform

Query Browser

Administrator

Migration Toolkit

. On the server . CPU Load

. Linux – Load Average

. Windows – CPU usage %

. Mac – Load Average . Total Connections . Network Traffic

. MySQL Only – Byte Sent + Bytes Rcved . Total QPS for entire server

. Total Ops . Percentage of Pages Free/Total

• Connect – (DB Click or Open and Connect) • Go to Management Tab – If needed (Bottom Left) • Go to Dashboard – New Performance Section

• Max Time Window is ~2.5 minutes • Data is transient – Nothing is stored long term in WB – For storing history of performance use MEM • Plenty of mouse over's for details and descriptions

Mouse over for Details

• Hits and Misses in Mouse Over

• Finding problems looking at the whole server – Queries – IO and Files – Buffers – Threads – Connections – Etc

• Connect – (DB Click or Open and Connect) • Go to Management Tab – If needed (Bottom Left) • Go to Performance Reports – New Performance Section

• Installs the SYS schema – Or updates to newer version in needed

• No Tables • Only – Views – SPs – Functions • Operates on – Performance Schema – Information Schema

• Providing 2 options • One is easy – To read in a query • Other (x$) is easier – To compare – To Export to spreadsheet – To Graph – To consume in code

SPs FUNCTIONS Used to simplify Used for Formatting and management Simple Checks

• WB wrappers many SYS views

• If we’ve missed a needed report or view – Let us know – Happy to add more

– Even if not performance related • Could go in an Inspector

Title and Brief Description

Sortable Columns

Column Labels indicate Units

• 4 Categories – IO – High Cost SQL Statements – Database Statistics – Wait Event Times – InnoDB Statistics

• For – Files, Event Categories, User/Thread • Quickly – View, Sort – By #, Time, Reads, Writes, Percentages • Look for Hot Spots – Use to determine system requirements, tuning, etc.

• Look at query statements and statistics • Look for Full Table Scans • Frequency of execution • Errors, Warnings • Long Runtimes – Total, Max, Ave • Large numbers of Rows – Total, Max, Ave • Usage of Temp Tables

• Quickly Review Various Stats – Counts – Rows – Timing – Paging – Buffering – IOs • Easily find Full Scans • Spot Unused Indexes • Also See Schema/Table Inspectors – Table, Column, Index,… Statis

• Wait Event Analysis is Complex • However for power expert users – These reports show collected data – Show the queries used to collect – Provides Statistics – Breaks out events by Users and Classes

• Quick views – Aggregated • By Schema • By Table – Easy to sort by • Allocation, Data, • Pages, Pages hashed, Old Pages • Rows cached

• Assess Tables – Engine Types – Statistics • Column – Types – Size • Indexes and Triggers …

Access to table maintenance ANALYZE – updates statistics – important for innodb tables OPTIMIZE TABLE – formats data more efficiently on disk CHECK – if not valid – may be having some problems – important for myisam

• When you're working on a specific query – To optimize performance – Understand how it executes – Hints for how to restructure query – Add indexes – Change design of schema – Etc

• Runs EXPLAIN FORMAT=JSON (for 5.6 and up)

• Based on MySQL Version – The higher the version the more details in latest JSON explain data

– The more details in JSON Explain Data – the more Workbench shows

• Some simpler terms versus JSON explain Output – For example • ALL -> Full Table Scan • REF -> Non-Unique Key Lookup

• Color Hint at Importance – Bad to Good - Red, Yellow, Green • Boxes are – A lookup Action – Hover over for details • Type • Objects • References • Possible Issues • Optimization Hints/Ideas

. Joined values are here • Bottom # – How many rows . Category_Id • Number of rows 992 from loop is . Film_id

• 16x31x1x2x1 . Actor_id

• Prefix Cost (read + Eval) • Read Cost • Eval Cost • Data Read Per Join • Rows Returned Cost Shown on Left Hand Side – based on Cost Type Selected

Duration = Execution time – on the server Fetch = Time to transfer the result (Network + Client “App” Latency)

Server # more accurate typically

Either PS is off – see next page OR You didn’t run mysql_upgrade

Connections Look for Right Click – From Where – Unexpected apps – View Thread Stack – Who / What – Analysis – Go to Explain Plan (5.7) – Which DB – Jobs – How long Time Duration Look for high time values for Queries for example

• To try it - in WB editor run select * from actor where (select sleep(30));

• Show SQL from a Connection in Editor • Format SQL so its more readable • Execute to see timing • Run Explain on the SQL

• Insight into improving design, improving indexing, how to write SQL

• Enable, Set time in seconds, Set to 0 to test

• Go to Slow Query Log

• Download: – http://dev.mysql.com/downloads/tools/workbench/

• Bugs: – http://bugs.mysql.com

• Forums: – http://forums.mysql.com/index.php?151

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