FIX: Severe spinlock contention occurs in SQL Server 2019

Applies to: SQL Server 2019 on LinuxSQL Server 2019 on Windows

Symptoms


When you run many online transactions on a database in Microsoft SQL Server 2019, you notice severe spinlock contention. The severe contention is generally observed on new generation and high-end systems. The following conditions apply to severe spinlock contention:
  • Requires modern hardware, such as Intel Sklylake processors
  • Requires a server that has many CPUs
  • Requires a high number of concurrent users
  • Symptoms may include unexpected high CPU usage

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. 

Resolution


This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

References


Learn about the terminology that Microsoft uses to describe software updates.

Third-partyinformation disclaimer

The third-partyproducts that this article discusses are manufactured by companies that areindependent of Microsoft. Microsoft makes no warranty, implied or otherwise,about the performance or reliability of these products.