Incremental backup performance suffers if the system has a low amount of memory available before starting the backup.
If your system is memory constrained, specify the memoryefficientbackup yes option in your client options file. This option causes Tivoli® Storage Manager to process only one directory at a time, which reduces memory consumption but increases backup time. When you specify yes, Tivoli Storage Manager analyzes only one directory at a time for backup consideration. If performance remains poor, check your communication buffer settings and the communication link between your system and the Tivoli Storage Manager server. If your system is not memory constrained, setting the memoryefficientbackup option to yes degrades your backup performance.