Type:
Bug
Priority:
Major
Resolution:
Duplicate
Affects Version/s:
10.3(EOL) , 10.4(EOL) , 10.5 , 10.6 , 10.7(EOL) , 10.8(EOL) , 10.9(EOL) , 10.10(EOL)
The CMake parameter WITH_DBUG_TRACE allows debug tests to run much faster by disabling macros like DBUG_ENTER and DBUG_RETURN .
We should go one step further and also disable DBUG_PRINT output. It turns out that only a small number of InnoDB redo log related tests were making use of DEBUG_DBUG='+d,ib_log' to check that some log records were written or parsed. We can live very well without those checks.
Conditional branches are bad for tools like the rr debugger . Even if all DBUG_PRINT statements are normally disabled in test runs, the conditional branches would create unnecessary (and useless) opportunity of context switches in rr . I have witnessed a case where a test that would take more than 2 hours to run would finish in a few seconds when the server was compiled with cmake -DPLUGIN_PERFSCHEMA=NO -DWITH_DBUG_TRACE=OFF -DWITH_SAFEMALLOC=OFF .
Thanks to wlad for noticing this additional opportunity.
After this change, enabling cmake -DWITH_DBUG_TRACE=OFF on debug builders would trivially work around MDEV-21361 .
duplicates
MDEV-29613
Improve WITH_DBUG_TRACE=OFF
Closed
There are no comments yet on this issue.
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