Rank total_spills and recent counters, inspect plans, compare Query Store tempdb use, and investigate estimates before increasing grants.
Find Database File Latency – SQL in Sixty Seconds #198
Lots of people asked me to create a video on my earlier blog post SQL SERVER – Script to List Database File Latency. Here is the video.
MySQL Configuration Changes: Track What Changed and When
MySQL configuration changes explain many sudden slowdowns. See how innodb_read_ahead_threshold works, what MySQL 8.0 records about a change and how to keep your own history.
Database File Latency: Read and Write Stalls per IO
Database file latency is the stall time per read or write. This post divides the IO stall columns by the call counts for every file, explains the zero queued columns and says when a number is worth acting on.
Indexing for Delete – SQL in Sixty Seconds #197
Today, we will see another interesting topic where the index affects the delete statement. Let us start watching the video Indexing for Delete.
Remove Key Lookup – SQL in Sixty Seconds #194
Today, we are going to see one more trick from the book – Remove Key Lookup and improve the performance of queries.
Performance Troubles – Function on Date Variable – SQL in Sixty Seconds #192
However, I have a really good reason to use that. Today we are going to discuss Performance Troubles – Function on Date Variable.