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sys.dm_elastic_pool_resource_stats (Azure SQL Database)

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Applies to: Azure SQL Database

Returns resource usage statistics for the elastic pool containing the current database on an Azure SQL Database logical server. This includes CPU, Data IO, Log IO, storage consumption and concurrent request/session utilization by the pool. The view returns the same data in any database in the same elastic pool.

The sys.dm_elastic_pool_resource_stats dynamic management view is similar to sys.elastic_pool_resource_stats (Azure SQL Database), with the following differences:

sys.elastic_pool_resource_stats sys.dm_elastic_pool_resource_stats
Available in the master database Available in any user database in an elastic pool
Provides data for all elastic pools on a logical server Provides data for the elastic pool containing the current database
Populated asynchronously, data may appear with a few minutes delay Populated in real time. A new row is added every few seconds.
Retains data for 14 days Retains data for approximately 40 minutes
Intended for historical monitoring and trend analysis Intended for real-time monitoring and troubleshooting
Column name Data type Description
end_time datetime UTC time indicating the end of the reporting interval.
avg_cpu_percent decimal(5,2) Average CPU utilization as a percentage of pool limit.
avg_data_io_percent decimal(5,2) Average IOPS utilization as a percentage of pool limit.
avg_log_write_percent decimal(5,2) Average log write throughput utilization as a percentage of pool limit.
avg_storage_percent decimal(5,2) Not supported and may be removed in a future update. Use used_storage_percent.
max_worker_percent decimal(5,2) Maximum concurrent workers as a percentage of pool limit.
max_session_percent decimal(5,2) Maximum concurrent sessions as a percentage of pool limit.
avg_instance_memory_percent decimal(5,2) Average consumption of memory by the database engine instance hosting the pool, as a percentage of instance limit.
avg_instance_cpu_percent decimal(5,2)
avg_edtu_percent decimal(5,2) For DTU elastic pools, average eDTU utilization as a percentage of pool limit.
instance_vcores decimal(5,2) The number of vCores provisioned for the database engine instance hosting the pool.
used_storage_mb bigint The amount of used storage in all databases in the pool, in megabytes.
allocated_storage_mb bigint The amount of storage allocated for all data files in all databases in the pool, in megabytes.
storage_limit_mb bigint The maximum data size limit of the pool, in megabytes.
used_storage_percent decimal(5,2) Used data storage utilization in all databases in the pool, as a percentage of pool storage limit (maximum data size).
allocated_storage_percent decimal(5,2) The amount of storage allocated for all data files in all databases in the pool, as a percentage of pool storage limit (maximum data size).

Remarks

The dynamic management view sys.dm_elastic_pool_resource_stats exists in every database, including single databases. You must be connected to a user database in an elastic pool to obtain elastic pool resource utilization data from this view.

Permissions

This view requires VIEW SERVER STATE permission.

Examples

The following example returns resource utilization data ordered by the most recent time for the elastic pool containing the current database.

SELECT end_time, avg_cpu_percent, avg_data_io_percent, avg_log_write_percent, max_worker_percent, max_session_percent
, avg_instance_memory_percent, avg_instance_cpu_percent, avg_edtu_percent, instance_vcores
, used_storage_mb, allocated_storage_mb, storage_limit_mb, used_storage_percent, allocated_storage_percent
FROM sys.dm_elastic_pool_resource_stats
ORDER BY end_time DESC;

Next steps

Learn more about elastic pools and related concepts in the following articles: