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Join sys.allocation_units with fn_virtualfilestats()
How to join the sys.allocation_units system view with the fn_virtualfilestats() system function view?
✍: FYIcenter.com
If you want to watch the I/O statistics of physical files related to a give table, you need to join sys.allocation_units system view with fn_virtualfilestats() as shown below:
-- fyi_get_io_stats_by_table -- Copyright (c) FYIcenter.com select t.name, p.partition_id, p.rows, a.type_desc, a.data_space_id, a.data_pages, f.file_id, s.NumberReads, s.BytesRead, s.NumberWrites, s.BytesWritten from sys.objects t, sys.partitions p, sys.allocation_units a, sys.database_files f, fn_virtualfilestats(DB_ID(),NULL) s where t.name = 'ORDER' and t.object_id = p.object_id and p.hobt_id = a.container_id and a.data_space_id = f.data_space_id and f.file_id = s.fileid order by p.partition_id NAME PARTITION_ID ROWS DATA_SPACE_ID DATA_PAGES FILE_ID NUMBERREADS BYTESREAD ... ORDER 721467753 140 1 4 1 4156 44335872 ... ORDER 721468408 140 1 2 1 4156 44335872 ... ORDER 721469064 140 1 1 1 4156 44335872 ...
As you can see, this ORDER table has 3 partitions in a single physical file.
⇒ I/O Tests on INSERT Statements
⇐ What Is fn_virtualfilestats()
2019-06-29, 1186🔥, 0💬
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