Forum Discussion

Anonymous's avatar
Anonymous
Not applicable
5 years ago

Inconsistent Dataset Refresh Times

Good morning,

 

We are experiencing inconsistent Dataset Refresh durations for a particular dataset.  WWhen refreshed On Demand, the refresh takes less than 10 minutes, when scheduled it occasionally takes more than one hour.  The source is an Azure SQL Server with consistent load, with the only spikes occurring at 5 past the hour, every hour, and lasting roughly 10-15 minutes each time, when data is inserted into the Azure Database.  Having checked the Database logs, it appears as though the queries do not start hitting the database until well after the scheduled start of the Dataset Refresh process.

 

Scheduled05/12/2020, 08:30:1805/12/2020, 09:15:24Completed
Scheduled05/12/2020, 07:31:1305/12/2020, 08:02:59Completed
Scheduled04/12/2020, 20:30:0904/12/2020, 20:38:44Completed
Scheduled04/12/2020, 20:01:0204/12/2020, 20:13:18Completed
Scheduled04/12/2020, 19:30:0904/12/2020, 19:39:12Completed
On demand04/12/2020, 11:51:2704/12/2020, 11:54:20Completed
Scheduled04/12/2020, 08:31:0204/12/2020, 08:43:07Completed
Scheduled04/12/2020, 08:03:1904/12/2020, 08:20:21Completed
Scheduled04/12/2020, 07:31:0204/12/2020, 07:43:13Completed
Scheduled03/12/2020, 19:30:1103/12/2020, 21:01:13Completed
On demand03/12/2020, 11:13:4203/12/2020, 11:17:07Completed
On demand03/12/2020, 11:00:1003/12/2020, 11:08:25Completed
On demand03/12/2020, 10:51:5503/12/2020, 10:52:36Completed
On demand03/12/2020, 10:50:3803/12/2020, 10:51:55Completed
On demand03/12/2020, 10:32:0803/12/2020, 10:50:35Completed
Scheduled03/12/2020, 08:31:0203/12/2020, 08:42:47Completed
Scheduled03/12/2020, 08:03:1103/12/2020, 08:19:57Completed
Scheduled03/12/2020, 07:31:0103/12/2020, 07:41:21Completed

 

What is concerning is that these long durations appear to be randomly occurring, and as a result we cannot Subscribe to reports or dashboard which use this dataset and expect consistent results.

 

Has anybody encountered this before?  Is it possible to find some audit logs for the dataset refresh which would indicate the timestamps for each step of the dataset refresh process?  Thanks!

3 Replies

  • mussaenda's avatar
    mussaenda
    Community Champion

    Hi Anonymous ,

     

    do you also have other reports refreshing with the same time of the report you mentioned above?

    • Anonymous's avatar
      Anonymous
      Not applicable

      Hi mussaenda , thanks for your reply.  We don't at that time, it is set up to be the only dataset refreshing at that time.  Would having multiple datasets refreshing close to each other affect the consistency of triggering the dataset refresh?  Thanks!

      • mussaenda's avatar
        mussaenda
        Community Champion

        Hi Anonymous,

         

        Yes, I believe so. I also experienced your situation and what we did, we changed the timing of the reports refresh to avoid refreshing all at the same time. That quite helped the performance of the refresh.

         

        Try also these suggestions:

        Refresh