Amount of data read / write in particular database

Question

Dear All,
Hi,
I am using mssql server 2005 on windows server 2008 sp2.
I want to know how can I check what amount of data is written or read in a particular database
in specific time in kb or mb.
Regards,

Answer 1

One way I can think of to do what you are looking for is to use the DMV sys.dm_io_virtual_file_stats.  By using that DMV you can figure out over a given period of time the amount of disk activity associated with a particular database file.  The
thing the DMV doesn't show you is total activity because any activity associated with data cached by SQL Server won't be reflected.  It only reflects the activity associated with reads and writes that cannot be satisfied by the SQL Server cache.
Anyway, try the following code.  It'll tell you how much data SQL Server is accessing from the disk:
select db_name(f.database_id) as [db_name],
f.name,
f.physical_name,
s.sample_ms,
s.num_of_bytes_read,
s.num_of_bytes_written,
s.num_of_reads,
s.num_of_writes
from sys.master_files as f
cross apply sys.dm_io_virtual_file_stats(f.database_id, f.file_id) as s
where db_name(f.database_id) = 'MyDatabase'