--Query 2 – Execute to analyse statistics of physical I/Os on an index or heap partition:

SELECT DB_NAME([database_id]) AS [Database]
    ,iops.[object_id] AS [ObjectID]
    ,QUOTENAME(OBJECT_SCHEMA_NAME(iops.[object_id], [database_id])) + N'.' + QUOTENAME(OBJECT_NAME(iops.[object_id], [database_id])) AS [ObjectName]
    ,i.[name] AS [IndexName]
    ,CASE
        WHEN i.[is_unique] = 1
            THEN 'UNIQUE '
        ELSE ''
        END + i.[type_desc] AS [IndexType]
    ,iops.[page_latch_wait_count] AS [PageLatchWaitCount]
    ,iops.[page_io_latch_wait_count] AS [PageIOLatchWaitCount]
    ,iops.[page_io_latch_wait_in_ms] AS [PageIOLatchWaitInMilliseconds]
FROM [sys].[dm_db_index_operational_stats](DB_ID(), NULL, NULL, NULL) iops
INNER JOIN [sys].[indexes] i
    ON i.[object_id] = iops.[object_id]
        AND i.[index_id] = iops.[index_id]
ORDER BY iops.[page_latch_wait_count] + iops.[page_io_latch_wait_count] DESC