Tablespaces: Direct I/O (DB2 UDB for UNIX and Windows) 

To display information on direct I/O for your selected tablespace(s), call the DBA Cockpit.

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       1.      In the navigation frame, choose Performance ®Tablespaces.

The Tablespace Snapshot screen appears.

       2.      To display more detailed information, select one or more tablespaces and choose  Details.

A detail Tablespace Snapshot screen appears.

       3.      Choose Direct I/O.

If you have selected more than one tablespace, you can use the page buttons on the screen to navigate between them.

Field	Description
Average Time
Direct Reads	Average time in milliseconds required to read directly from disk
Direct Writes	Average time in milliseconds required to write directly to disk
I/O
Direct Reads	Read accesses from disk that do not use the buffer pool (LONG VARCHAR fields, backup)
Direct Writes	Write accesses to disk that do not use the buffer pool (LONG VARCHAR fields, restore, load)
Average I/O per Request
Direct Reads	Average number of requests to read directly from disk
Direct Writes	Average number of requests to write directly to disk