Between 20 – 50 ms – slow, needs attention Greater than 50 ms – Serious I/O bottleneck (Source:MSDN) If this value is above the recommended value, check whether SQL Server is doing extra I/O than it is supposed to be. For ex: A query was re-written adding a new column and ind...
If you can quantify the information from a query as a single numeric value, then you can pass it out to Performance Monitor to enhance your analysis. For instance, you may choose to find out how many outstanding IOPs exist on SQL Server waiting longer than 10ms with:...
Now, I can open each publication to see how it is setup, but as I mentioned we have many publications so I didn’t want to waste my time opening each publication using SQL Server Management Studio. So instead, I used the query that I wrote in this tip “SQL Server ...
Between 20 - 50 ms - slow, needs attention Greater than 50 ms – Serious I/O bottleneck (Source:MSDN) If this value is above the recommended value, check whether SQL Server is doing extra I/O than it is supposed to be. For ex: A query was re-...
SQL Server resource usage (CPU, Memory, Storage) and Configuration Slow query performance Security, Encryption, Auditing, Authorization Database Client Programming General Troubleshooting Information Integration Services (SSIS) Master Data Services Parallel Data Warehouse (APS) ...
Now, when loading the page, each FlowField calculation is performed as a separate SQL statement, which can be found either in an SQL trace or by using the Query Store feature in SQL Server 2016 (or later). Once the slow subquery has been identified, yo...
As I explained above, when an event is consumed synchronously, the code that fired the event has to wait until the event has been consumed. Obviously, if consumption of the event is a complicated process, this can slow down the code. ...
A slow running user query: The performance of an existing query may regress or a new query may appear to be taking longer than expected. There can be many reasons for this. For example: Changes in statistical information can lead to a poor query plan for an existing query. ...
Slow performance - Extended Event (XEvent) trace captures batch-level starting/completed events, errors and warnings, log growth/shrink, lock escalation and timeout, deadlock, login/logout- List of actively running SQL traces and Xevents- Snapshots of SQL DMVs that track waits/blocking...
Check the database using Enterprise Manager and see if there are any queries that are slow. Follow Enterprise Manager recommendation to add suggested indexes Check if the application server CPU is high Take a thread dump if possible Check the connectivity and network speed between application server...