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 Checking IO Statistics..

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revdnrdy
Posting Yak Master

220 Posts

Posted - 2008-12-29 : 17:11:06
Hello;

I am running this piece of script to check the IO on our sql server

SELECT *
FROM sys.dm_io_virtual_file_stats(null,null),
sys.databases
WHERE sys.databases.database_id
=sys.dm_io_virtual_file_stats.database_id;

Does anyone know how far back this check goes time wise? When you see a read time of 10000 milliseconds what is that reflecting? Is that an estimate over 1 hour or 24 hours or what?

thanks for any feedback.

r&r

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2008-12-29 : 17:14:51
It is since the SQL Server instance was started.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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revdnrdy
Posting Yak Master

220 Posts

Posted - 2008-12-29 : 17:41:04

Do you mean since the instance was restarted?
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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2008-12-29 : 17:45:16
It means when the SQL Server instance's associated service entered the started state.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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