A few days ago, on March 21st, I participated as an invited speaker at Microsoft Conference 2014 that took place in Nicosia, Cyprus.
My session was on SQL Server 2014 and specifically about what’s new in this release of SQL Server.
My session’s agenda was on the following areas of new features on SQL Server:
- Interaction with Windows Azure
- Security Enhancements
- Performance Improvements & Enhancements
- T-SQL Enhancements
- In-Memory OLTP Engine
Someone might wonder why the “In-Memory OLTP Engine” is in bold, red letters 🙂
The SQL Server In-Memory OLTP Engine
The reason is that this feature is the long-awaited in-memory processing engine that it is built-in into the SQL Server Engine and when you properly use it, you can get extremely high speedups in data processing when compared to the “traditional processing”.
The In-Memory OLTP Engine introduces new data structures described as “memory-optimized” (i.e. memory-optimized tables and table variables).
Memory-optimized tables store their data into memory using multiple versions of each row’s data. This technique is characterized as “Non-blocking multi-version optimistic concurrency control” and eliminates both Locks and Latches thus achieving breakthrough performance. The list of main features of memory-optimized tables are:
- Rows in the table are read from and written to memory
- The entire table resides in memory
- Non-blocking multi-version optimistic concurrency control
- Durable & non-durable
- A second copy maintained on disk for durability (if enabled)
- Data in memory-optimized tables is only read from disk during database recovery
- Interoperable with disk-based tables
Natively-Compiled Stored Procedures
- It is compiled to native code (DLL) when it is created
- Aggressive optimizations take time at compile time
- Can only interact with memory-optimized tables
The call to a natively compiled stored procedure is actually a DLL Entry Point which is something that offers very fast execution times!
When you properly combine memory-optimized tables with natively compiled stored procedures for heavy workloads like DW ETL processes, high data insert rate processes and processes that demand low latency execution you can expect some serious speedups.
Feel free to view/download my presentation below:
Highly Recommended Tool: In-Memory OLTP Simulator
Our solution, “In-Memory OLTP Simulator“, helps you to easily benchmark standard and custom scenarios of data workloads and processing against the powerful In-Memory OLTP Engine in SQL Server. Moreover, you get rich analytics and insights, and see how Memory Optimization in SQL Server can help you boost the performance of your data processes.Try In-Memory OLTP Simulator free for 30 days
- In-Memory Optimization in SQL Server: A Simple Experiment
- Introducing In-Memory Optimization in SQL Server
- Getting Started with SQL Server In-Memory OLTP – Part 1
- Getting Started with SQL Server In-Memory OLTP – Part 2
- Where are temporary tables stored in SQL Server?
- SQL Server 2016: TempDB Enhancements
- tempdb growth
Check our other related SQL Server Performance articles.
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Reference: SQLNetHub.com (https://www.sqlnethub.com)