Find the slowest stored procedures with cache statistics, compare CPU and reads, and use two snapshots to isolate one busy hour.
DMV Snapshot Deltas for a Query Activity Interval
DMV snapshot deltas show counter growth for cached statements that survive two observations. Compare their identities and report missing coverage before ranking activity.
SQL SERVER – Pending IO request in SQL Server – DMV
How many pending IO requests are there for each MDF and LDF file? My handy script joins sys.dm_io_pending_io_requests with virtual file stats.
Wait Stats Summary: Every Wait on One Page
This wait stats summary puts every wait from the series on one page: what it means and the first fix to try. On Night 28 at the Clipboard Diner, the critic finally comes on an ordinary Tuesday. The lesson of the whole series is the same as the story’s: know what normal looks like on your server.
Wait Stats Troubleshooting: From Top Wait to First Fix
Wait stats troubleshooting comes down to one habit: find the top real wait, ask its first question, and try one fix. On Night 27 at the Clipboard Diner, Casey tapes a one-page chart to the fridge. Here is that chart for SQL Server, plus one query that shows your top waits with their share and signal percent.
Batch Mode Wait Stats: HTBUILD and Columnstore Waits
Batch mode wait stats such as HTBUILD and BPSORT show threads waiting for each other inside a parallel batch mode plan. On Night 26 at the Clipboard Diner, four cooks wait for one giant shared tray before 900 cookies can bake. Then I show when these waits are normal, when skew or spills make them a problem, and how to check them.
RESOURCE_SEMAPHORE Wait Stats: Memory Grant Waits
RESOURCE_SEMAPHORE wait stats mean a query is waiting for memory before it can even start. On Night 25 at the Clipboard Diner, a wedding party reserves the whole counter and two birthday parties wait. Then I show how to find waiting grants, why grants grow too big, and the fixes I try first.