Database: Direct I/O (DB2 UDB for UNIX and
Windows) 
To display information on direct I/O, call the DBA Cockpit.
...
1. In the navigation frame, choose Performance ®Database.
The Database Snapshot screen appears.
2. Choose Direct I/O.
|
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 |