Hi ALL: My Database is for logs only, I almost have 30G data growth in my database. I Use partition table to store those data, those tables are partitioned by time column daily. My data only keep for three days. I will dump those data into dump file and drop the partition table after three days. My question is : The partition table that I have to backup and drop is running a long Prevent-Wraparound-Autovaccuum, Is any way to let the vacuum faster? The Prevent-Wraparound-Autovaccuum run very slow, almost 36 hours. My Disk IO is low. My Server config for vacuum list below: #------------------------------------------------------------------------------ # RESOURCE USAGE (except WAL) #------------------------------------------------------------------------------ shared_buffers = 4096MB # min 128kB temp_buffers = 384MB # min 800kB max_prepared_transactions = 100 # zero disables the feature work_mem = 100MB # min 64kB maintenance_work_mem = 192MB # min 1MB max_stack_depth = 4MB # min 100kB vacuum_cost_delay = 50ms # 0-100 milliseconds vacuum_cost_page_hit = 6 # 0-10000 credits vacuum_cost_limit = 1000 # 1-10000 credits #------------------------------------------------------------------------------ # AUTOVACUUM PARAMETERS #------------------------------------------------------------------------------ autovacuum = on # Enable autovacuum subprocess? 'on' autovacuum_max_workers = 3 # max number of autovacuum subprocesses autovacuum_naptime = 1 # time between autovacuum runs autovacuum_vacuum_scale_factor = 0.01 # fraction of table size before vacuum autovacuum_vacuum_cost_delay = 10ms # default vacuum cost delay for
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