Re: tuple concurrently updated

see postgresql.auto.conf:

# Do not edit this file manually!
# It will be overwritten by ALTER SYSTEM command.
autovacuum = 'true'
shared_buffers = '16GB'
max_stack_depth = '4MB'
autovacuum_max_workers = '4'
work_mem = '1GB'
listen_addresses = '*'
max_connections = '300'
max_worker_processes = '8'
max_parallel_workers_per_gather = '2'
max_wal_size = '4GB'
max_wal_senders = '0'
max_locks_per_transaction = '128'
ssl = 'on'
log_min_messages = 'error'
log_connections = 'off'
log_hostname = 'off'
maintenance_work_mem = '4GB'
log_min_duration_statement = '30000'
checkpoint_completion_target = '0.85'
track_io_timing = 'on'
effective_cache_size = '2GB'
log_checkpoints = 'on'
wal_level = 'minimal'
wal_compression = 'on'
checkpoint_timeout = '5min'

and the storage hardware is on hdd

Am 28.08.2018 um 15:46 schrieb 066ce286(at)free(dot)fr:
> AAMOF, what are your fsync/wal_sync_method parameters, and what is your storage hardware ?
>