IBM Books

Total Buffer Pool Physical Write Time


Snapshot Information Level
Database
Table Space
 
Application

API Structure(s)
sqlm_dbase
sqlm_tablespace
sqlm_bp_info
sqlm_appl

Monitor Group
Buffer Pool
Buffer Poo
Buffer Pooll
Buffer Pool

Resettable

Yes

 

Event Information Level
Database
Table Space
Connection

API Structure(s)
sqlm_db_event
sqlm_tablespace_event
sqlm_conn_event

 

API Element Name
Element Type

pool_write_time
counter

 

Description:  Provides the total amount of time spent physically writing data or index pages from the buffer pool to disk.

Usage:  You can use this element with "Buffer Pool Data Writes" and "Buffer Pool Index Writes" to calculate the average page-write time. This average is important since it may indicate the presence of an I/O wait, which in turn may indicate that you should be moving data to a different device.

At the database and table space levels, this element includes the value of "Buffer Pool Asynchronous Write Time".

[ Top of Page | Table of Contents | Glossary | Index ]

[ DB2 List of Books | Search the DB2 Books ]