Home > Link, Microsoft SQL Server, MSBI, Optimization, Query, Script, SQL Mentalist, SQL PraRup, SQL Query, SQL Server, Technology,, TSQL, Vishal Pawar > BI SQL # 206 : SQL Server DBA Scripts : Identify IO Stall For Each DB

BI SQL # 206 : SQL Server DBA Scripts : Identify IO Stall For Each DB

Hi Folks,

In this article we are going to cover How to Identify IO Stall For Each DB.

In this post we are going to discuss following points:

  • Problem Statement of SQL Script:
  • Description of SQL Script:
  • SQL Script Output Column
  • SQL Script Code
  • SQL Script Output Screenshot
  • User Level to execute

Problem Statement of SQL Script:

How to Identify IO Stall For Each DB?

Description of SQL Script:

This script will help to identify IO Stall For Each DB.

SQL Script Output Column

image

SQL Script Code

SELECT DB_NAME(database_id) AS [Database Name]
    ,file_id
    ,io_stall_read_ms
    ,num_of_reads
    ,CAST(io_stall_read_ms / (1.0 + num_of_reads) AS 
        NUMERIC(10, 1)) AS [avg_read_stall_ms]
    ,io_stall_write_ms
    ,num_of_writes
    ,CAST(io_stall_write_ms / (1.0 + num_of_writes) 
        AS NUMERIC(10, 1)) AS [avg_write_stall_ms]
    ,io_stall_read_ms + io_stall_write_ms AS [io_stalls]
    ,num_of_reads + num_of_writes AS [total_io]
    ,CAST((io_stall_read_ms + io_stall_write_ms) / 
(1.0 + num_of_reads + num_of_writes
            ) AS NUMERIC(10, 1)) AS [avg_io_stall_ms] 
    -- into AverageStallsPerReadWrite
FROM sys.dm_io_virtual_file_stats(NULL, NULL)
ORDER BY avg_io_stall_ms DESC;

SQL Script Output Screenshot

image

User Level to execute

    300

    Hope you will like How to Identify IO Stall For Each DB.

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