Many thanks for Heitor Faria(Mr./Ms.) and Randoslaw Koreniewski(Mr./Ms) Mysql DB was MyISAM therefore changed to InnoDB. and also inserted few lines as suggested on http://bacula.us/tuning/ as follows sort_buffer_size = 2MB innodb_buffer_pool_size = 128MB innodb_flush_log_at_trx_commit = 0 innodb_flush_method = O_DIRECT then "Bulding directory tree" finish almost immidiatly. FYI following case take only less than 30seconds +-------+-------+----------+---------------+---------------------+------------+ | JobId | Level | JobFiles | JobBytes | StartTime | VolumeName | +-------+-------+----------+---------------+---------------------+------------+ | 4 | F | 258,441 | 2,262,481,683 | 2015-07-02 14:32:50 | Vol-0004 | | 14 | I | 158 | 79,623,411 | 2015-07-03 04:32:49 | Vol-0014 | +-------+-------+----------+---------------+---------------------+------------+ Thanks again for the help. F.Otake
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