In-Memory Optimization in SQL Server: Will my Workload Execute Faster?

In-Memory Optimization in SQL Server: Will my Workload Execute Faster?

In-Memory Optimization in SQL Server: Will my Workload Execute Faster?

In-Memory OLTP in SQL Server 2014 or later is a powerful engine integrated into the SQL Server Engine, optimized for Online Transaction Processing (OLTP). In-Memory Optimization in SQL Server, has certain characteristics and can help increasing performance in a great number of scenarios.


A Short Description of the SQL Server In-Memory OLTP Technology

If I was about to describe this technology in two simple sentences I would do so with the below:

  • It eliminates both locks and latches with an optimistic multi-version concurrency control mechanism.
  • It introduces memory-optimized tables and natively-compiled stored procedures.
However, organizations always make one key question (besides the cost) when it comes to invest in a new technology, for example in this case the question would most probably look like:  “Will we benefit in terms of significant performance and time gain if we invest in this technology?”
The answer, of course, is “It Depends” 🙂

But In-Memory Optimization achieves significant speedups so why say it depends”?


Best-Suited Workload Types for In-Memory Optimization in SQL Server

The reason for the classic “it depends” answer is because of the workload types each Organization’s DBMS systems usually process. You see, there is a list of best-suited workload types where In-Memory Optimization can provide significant performance. Some of these are:
  • High Data Insert Rate
    • Examples: Smart Metering, System Telemetry
  • Read Performance and Scale
    • Example: Social Network Browsing
  • Compute Heavy Data Processing
    • Examples: Manufacturing supply chains or retailers
  • Low latency Execution
    • Examples: Online Gaming Platforms, Capital Markets
  • Session State Management
    • Example: Managing sessions (i.e. user requests, etc.) for a heavily-visited websites

This of course does not mean that other workload types that are not in the above list cannot benefit from In-Memory Optimization but for them a more thorough investigation/study will be required.


How to Check if In-Memory Optimization in SQL Server can Help You

There are many ways to investigate if using In-Memory Optimization in SQL Server could give you the performance gain for you are looking for:

Another way is simulation. I’m a big fan of simulation (and I’m sure the rest of the world is too) because with simulation you can process actual production data/workloads in the safeness of an isolated non-production environment equipped with a promising new technology or a new processing method. The results of the simulation can indicate (maybe not in a 100% factor but very close to that) if processing part of your workload or all of it using the In-Memory OLTP Engine in SQL Server can give you the performance gain you are looking for.


Introducing: SQLNetHub’s In-Memory OLTP Simulator

For all the above reasons we created “In-Memory OLTP Simulator“. In-Memory OLTP Simulator enables the user to easily test the powerful In-Memory OLTP Engine of SQL Server 2014 (or later) against different workloads via a simple and intelligent GUI. In-Memory OLTP Simulator features three simulation modes which are:
    • Disk-Based
    • Memory-Optimized
    • Memory-Optimized with Natively-Compiled Stored Procedure


In-Memory OLTP Simulator - SQLNetHub

Main screen of In-Memory OLTP Simulator


The available editions of In-Memory OLTP Simulator are:
In-Memory OLTP Simulator - Simulation Statistics Page - SQLNetHub

In-Memory OLTP Simulator – Simulation Statistics Page


Try In-Memory OLTP Simulator free for 30 days!



Artemakis Artemiou
Artemakis Artemiou is a Senior SQL Server Architect, Author, and a 9 Times Microsoft Data Platform MVP (2009-2018). He has over 15 years of experience in the IT industry in various roles. Artemakis is the founder of SQLNetHub and Artemakis is the creator of the well-known software tools Snippets Generator and DBA Security Advisor. Also, he is the author of many eBooks on SQL Server. Artemakis currently serves as the President of the Cyprus .NET User Group (CDNUG) and the International .NET Association Country Leader for Cyprus (INETA). Artemakis's official website can be found at