KB4538017 - FIX: Severe contention on LOGCACHE_ACCESS spinlock in SQL Server 2019

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


With an online transaction workload on the SQL Server 2019 database,you may notice severe contention on the LOGCACHE_ACCESS spinlock, with large numbers ofcollisions and spins, followed by a high contention on the LOGFLUSHQ spinlocks. This results in a SQL Server performance degradation. 


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


This issue is fixed in the following cumulative update for SQL Server:
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