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  • Back to Basics,  Performance Tuning

    VLFs the Forgotten Foe

    August 23, 2017 /

    How many of you check the amount of Virtual Log Files (VLFs) your transaction logs have? Working as a consultant now, I see this as something that is often ignored by DBAs.  This is an easy thing maintain and yet so many don’t know how to. Keeping these in check can give you a performance boost not only on startup but with your insert/update/delete as well as backup/restore operations. SQL Server performs better with a smaller number of right sized virtual log files.  I highly recommend you add this to your server reviews. What is a VLF? Every transaction log is composed of smaller segments called virtual log files. Every…

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    Monica Morehouse (Rathbun)

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About Me

Monica Morehouse (Rathbun)

Microsoft MVP, Performancing Tuning Expert, Leader Hampton Roads SQL Server User Group, Read More…

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Top Posts & Pages

  • What’s a Key Lookup?
    What’s a Key Lookup?
  • It's All in the Name, Index Naming Conventions
    It's All in the Name, Index Naming Conventions
  • Understanding Columnstore Indexes in SQL Server Part 3
    Understanding Columnstore Indexes in SQL Server Part 3
  • SQL Index Creation Using DROP EXISTING= ON
    SQL Index Creation Using DROP EXISTING= ON
  • Understanding Columnstore Indexes in SQL Server Part 2
    Understanding Columnstore Indexes in SQL Server Part 2
  • Scheduling things to Run in SQL Server
    Scheduling things to Run in SQL Server
  • Scooby Dooing Episode 10: The Case of the Copy-and-Paste Consultant
    Scooby Dooing Episode 10: The Case of the Copy-and-Paste Consultant
  • Trace Flags That Are Now Defaulted Behaviors in SQL Server
    Trace Flags That Are Now Defaulted Behaviors in SQL Server
  • Memory Optimized Tables in SQL Server
    Memory Optimized Tables in SQL Server
  • Please Don’t Do This! Default Index Fill Factor
    Please Don’t Do This! Default Index Fill Factor
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