Choose a Query Store capture mode for your workload, inspect ALL, AUTO, CUSTOM and NONE, and tune thresholds without losing useful history.
SQL Server Performance Stack: Look Beyond the Query
Tuned every query and SQL Server is still slow? David Klee looks at the SQL Server performance stack, from storage and virtualization to the network. He also explains why a baseline matters.
Investigating a Past Slowdown With the system_health Session
Nobody was tracing when it got slow. The system_health session was. Here is how to read what it kept before the files roll over.
SQLLive 360 Orlando 2013: Notes from a Great Experience
I presented three sessions at SQLLive 360 in Orlando, Florida, on November 19 and 20, 2013. It was my first time in Orlando. These are my notes from the event, with a few photos.
Why the Same Query Is Fast Then Suddenly Slow
Recognize parameter sniffing by comparing compiled values, data distribution, and reused plans, then test a remedy with its tradeoffs.
SELECT * Cost: Why Wide Result Sets Slow Exports
The query starts fast but the export crawls. A small demo shows how much a wide text column adds, and what to measure on your own server.
Real-Time Operational Analytics With a Filtered Columnstore Index
Build real-time operational analytics with a filtered columnstore index, inspect batch-mode plans and rowgroups, and measure write costs.







