When Azure SQL DB Tells You You’re Hitting Your DTU Limits

Brent Ozar shows us how to use sp_BlitzFirst to determine if you’re hitting DTU limits:


You’ve got an Azure SQL DB, and your queries are going slow. You’re wondering, “Am I hitting the performance limits? Is Microsoft throttling my queries?”
There’s an easy way to check: run sp_BlitzFirst. sp_BlitzFirst is our free performance health check stored procedure that analyzes a lot of common performance issues and then gives you a prioritized list of reasons why your server might be slow right now.

Click through for an example.  The same signal can mean “it’s time to move to a higher level in your tier,” “it’s time to move up to the next tier,” or “it’s time to tune that cursor in a cursor in a cursor which performs several scans of a very large table for each operation.”

Related Posts

Thoughts on Certification

Eugene Meidinger is certifiable: This being a complex topic, I thought I’d lay out the various factors to give a more comprehensive answer than you can easily fit in a tweet. So the first two questions we need to answer are “Why do certs exist?” and “Why do people take them?”. Without these, we can’t […]

Read More

Disable Lightweight Pooling

Randolph West explains why enabling lightweight pooling in SQL Server is almost always a bad idea: When can I enable lightweight pooling then?Don’t. But if you must, these are the conditions under which Microsoft suggests it may be useful:– Large multi-processor servers are in use.– All servers are running at or near maximum capacity.– A lot […]

Read More

Categories

December 2018
MTWTFSS
« Nov Jan »
 12
3456789
10111213141516
17181920212223
24252627282930
31