|
Problem IC66555
|
Status: Closed |
LARGE CPU OVERHEAD WHEN THE UOW EVENT MONITOR IS ACTIVE AND COLLECTING DATA |
| product: |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 |
| Problem description: |
When an UOW, Activities, Locking or Package Cache event monitor
is active and collecting data, workloads can experience a large
CPU overhead by the fast writer threads which are processing and
committing the event monitor records. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Anybody using an UOW, Activities, Locking or Package Cache *
* event monitor. *
****************************************************************
* PROBLEM DESCRIPTION: *
* When an UOW, Activities (SQL Table only, not File or Pipe), *
* Locking or Package Cache event monitor is active and *
* collecting data, the fast writer threads can consume a large *
* amount of CPU time. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to V9.8 Fix Pack 3 or higher. *
**************************************************************** |
| Local Fix: |
|
| Solution |
In V9.8 Fix Pack 3 the fast writer threads (db2fw0, db2fw1,
db2fw2, db2fw3) will consume less CPU time. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 22.02.2010
20.12.2010
20.12.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.8.FP3
|
| Problem solved according to the fixlist(s) of the following version(s) |
