Description
Similar to IO_COMPLETION, except this counter is present more for instances using database snapshots and performing some transaction log operations
Resolved by
DBAs and Developers
Suggested solutions
- Decrease number of database snapshots (if applicable)
- Clean up transaction log internal fragmentation (decrease number of VLFs to a suitable amount)
Additional research
Causes of IO_COMPLETION and WRITE_COMPLETION SQL Server wait types
High Virtual Log File (VLF) Count