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DB2 - Problem description

Problem IT35880 Status: Closed

DB2 11.5 PERF DEGRADATION ON LINUX: O_SYNC AND NOT O_DSYNC USED

product:
DB2 FOR LUW / DB2FORLUW / B50 - DB2
Problem description:
The crux of the issue is that 11.5 shows a significant
regression in write performance in *some* environments (seem to
be FS specific). Problem is likely with a build infrastructure
change. O_SYNC flag is defined differently on SLES and RHEL
resulting in Db2 using different file open options depending on
where it was built.
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* all                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Db2 11.5.5.1 or higher                            *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* all                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Db2 11.5.5.1 or higher                            *
****************************************************************
Comment
Upgrade to Db2 11.5.5.1 or higher
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
11.02.2021
31.03.2021
31.03.2021
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)