Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
MySQL 5.6: Improvements in the Nutshell
+8 Vote Up -0 Vote Down

Preparing for my talk for Percona MySQL University in Raleigh,NC, Tuesday 29th of January I have created the outline of improvements available in MySQL 5.6 which I thought was worth sharing to give a feel for how massive work have been done for this release in variety of areas. I’m sure the list is not complete so If I miss something significant please let me know through the comment and I’ll update the page

- Scalable Read Only Transactions
- Concurrent Innodb data file extension
- Non-Recursive Deadlock Detection
- Faster Locking Primitives
- Improved Innodb Thread Concurrency
- Multiple background Purge Threads
- Improved Purge lag control (now works)
- Split of “Kernel Mutex”
- Data Dictionary Cache
- Improved Adaptive Flushing
- Page Cleaner/Separate Flush Thread
- Group Commit for Binary Log
- Fight Cache Coherence and False Sharing issues
- Reduced Innodb Memory Fragmentation
- Reduced Locking for Partitioned tables
- Reduced Contention for LOCK_open
- Support for multiple table_open_cache instances
- Large (over 4GB) redo logs support

Optimizer and Execution
- Index Condition pushdown (ICP)
- Multi-Range-Read (MRR)
- Faster ORDER BY nidxcol LIMIT N
- Persistent Statistics for Innodb
- Improvements to Innodb Compression
- Fast Page Checksums (CRC32)
- 4K and 8K Page sizes for Innodb
- Improvement to Buffer Pool Flushing
- Subquery Optimizations
- More efficient Optimizer

- Optimized ROW Based Replication
- Multi-Threaded Slave
- Global Transaction Identifiers
- Crash Safe Slave and Binlog
- Replication Event Checksums
- Time Delayed Replication
- Server UUID
- Improved Logging for Row based Replication
- Replication Utilities for Failover and Admin

- – Meta Data Information Tables
- – Buffer Pool Information Tables
- – Reduced Overhead
- – Simplified Configuration
- – Table Access instrumentation
- – Statements instrumentation
- – Stages Instrumentation
- – Aggregations by User, Host etc
- – Network IO Instrumentation
- – Show Host Cache Contents
- – Improved File I/O Instrumentation
- Improved EXPLAIN
- – Explain for UPDATE/DELETE queries
- – JSON output with more information
- Optimizer Tracing
- Deadlock Logging

Operational Improvements
- Separate Tablespaces for Innodb Undo Logs
- Fast Restart – Preloading Innodb Buffer Pool
- Online DDL
- Import/Export for Partitioned Tables
- Remote Binlog Backup
- Innodb Transportable Tablespaces
- New configuration files defaults
- User Defined DATA DIRECTORY for Innodb Tables
- Connection Attributes

New Functionality for Developers
- MemcacheD API in Innodb
- Explicit Partition Selection in queries
- Full Text Search index for Innodb
- Microsecond TIME precision
- Precise spatial operations in GIS

- Password hashes instead of plain passwords in Query Logs
- SHA256 hashing with Salt for Authentication
- Use obfuscated password storage for command line tools
- Policy Based password validation
- Plugin authentication support for Replication

The post MySQL 5.6: Improvements in the Nutshell appeared first on MySQL Performance Blog.


You must be logged in with a MySQL account to vote on Planet MySQL entries. More information on PlanetMySQL voting.

Planet MySQL © 1995, 2016, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.