> Did you tell LKML? It seems like a kind of change that could be found
> using git bisect of Linux, albiet laboriously.
Hi, Daniel
> Only one las t question: Did you tune the postgresql.conf for every system? or
> Did you use the default configuration ?
Hi, Marcos
I have the issue with default and tuned configuration on all AMD systems:
Tuned config for 32Gb RAM:
#------------------------------------------------------------------------------
# Connection Settings -
#------------------------------------------------------------------------------
listen_addresses = '*'
port = 5432
max_connections = 50
#------------------------------------------------------------------------------
# OPTIMIZATIONS
#------------------------------------------------------------------------------
shared_buffers = 7680MB
effective_cache_size = 22GB
work_mem = 576MB
maintenance_work_mem = 2GB
wal_buffers = 16MB
fsync = off
synchronous_commit = off
#------------------------------------------------------------------------------
# PLANNER
#------------------------------------------------------------------------------
default_statistics_target = 100
constraint_exclusion = off
#------------------------------------------------------------------------------
# CHECKPOINTS
#------------------------------------------------------------------------------
checkpoint_timeout = 5min
checkpoint_segments = 16
checkpoint_completion_target = 0.9
#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------
autovacuum = on
autovacuum_naptime = 5min
autovacuum_max_workers = 1
autovacuum_vacuum_scale_factor = 0.0001
autovacuum_analyze_scale_factor = 0.0001
autovacuum_vacuum_threshold = 100
autovacuum_analyze_threshold = 100
autovacuum_vacuum_cost_delay = 1ms
#------------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#------------------------------------------------------------------------------
logging_collector = on
log_directory = 'pg_log'
log_filename = 'postgresql-%a.log'
log_truncate_on_rotation = on
log_rotation_age = 1d
log_rotation_size = 0
log_line_prefix = '%t %d %u '