usp_AdaptiveIndexDefrag / Not working on very large tables

[eliasbalasis]

It was suggested to me that the solution does not require applications downtime.

However it does not seem to be working well in Azure SQL and databases with tables having more than 1 billion of small length records (often more than 2 billion)

The process takes too long to complete the reorganization of indexes, more than a few days.
By the time this finishes the tables are fragmented again.

EXEC dbo.usp_AdaptiveIndexDefrag
@Exec_Print=1 ,
@printCmds=1 ,
@rebuildThreshold=100 ,
@rebuildThreshold_cs=100 ,
@updateStats=1 ,
@scanMode = 'LIMITED' ,
@onlineRebuild=1 ,
@minFragmentation=5 ,
@debugMode = 1 ,
@timeLimit=2880

There is also a suspicion that the tool is responsible for deadlock conditions during its run.