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AZURE INSTALL SQL SERVER 2014 WINDOWS

Last but not least, we’ve added relevant performance counters such as Disk Read IO/sec, Disk Read Bytes/sec, Avg Disk Read IO (ms), Disk Write IO/sec, Disk Write Bytes/sec, Avg Disk Write IO (ms), Disk Read IO Throttled/sec, Disk Write IO Throttled/sec to the SQLServer:Resource Pool Stats.

These XEvents follow the conventions of the existing IO related events, such as issuing IO and IO completion

Two new XEvents (file_write_enqueued, file_read_enqueued) were added to monitor IO requests to the IO Resource Manager queues.

In addition, we’ve also added a new DMV called sys.dm_resource_governor_resource_pool_volumes that captures IO usage stats across different volumes used by the instance.

We’ve added new columns in the sys.dm_resource_governor_resource_pools and sys.dm_resource_governor_configuration dynamic management views to surface the IO usage and configuration.

AZURE INSTALL SQL SERVER 2014 WINDOWS

As a note of clarification, by volume we refer to the disk volume as identified by Windows File system APIs.This knob is meant to calibrate the resource governor feature for your storage subsystem. Ability to configure the maximum outstanding IO per volume (at instance scope).See syntax details for Create and Alter resource pool with IO support. Resource Pools now support configuration of minimum and maximum IOPS per volume in addition to CPU/Memory settings enabling more comprehensive resource isolation controls.

In SQL Server 2014, we are excited to add support for IO resource governance. Since then, we’ve been incrementally enhancing this feature in major releases to address the top customer requests in this area. It enables customers to implement database consolidation or to configure their own database as a service. Resource Governor was introduced in SQL Server 2008 to achieve predictable performance in a multi-tenant environment, to support mixed workload patterns, to provide mechanisms and tools to deal with runaway queries, and to enforce resource limits for CPU and memory.