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Add Zulip customizations to Postgres 9.5 config file. 

This includes reasonable tuning of memory usage parameters based on
the values that pgtune would use, roughly.
This commit is contained in:
Tim Abbott 2016-07-08 12:48:20 -07:00
parent e818dff0b0
commit ea089518ee
2 changed files with 39 additions and 0 deletions
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11
puppet/zulip/manifests/postgres_appdb_tuned.pp
View File

@ -57,6 +57,17 @@ vm.dirty_background_ratio = 5
subscribe => [ Exec['pgtune'], File['/etc/sysctl.d/40-postgresql.conf'] ]
}
} else {
# We can't use the built-in $memorysize fact because it's a string with human-readable units
$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
$half_memory = $total_memory / 2
$half_memory_pages = $half_memory / 4096
$total_memory_mb = $total_memory / 1024 / 1024
$work_mem = $total_memory_mb / 512
$shared_buffers = $total_memory_mb / 8
$effective_cache_size = $total_memory_mb * 10 / 32
$maintenance_work_mem = $total_memory_mb / 32
file { "/etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf":
require => Package["postgresql-${zulip::base::postgres_version}"],
ensure => file,

28
puppet/zulip/templates/postgresql/9.5/postgresql.conf.template.erb
View File

@ -627,3 +627,31 @@ default_text_search_config = 'pg_catalog.english'
#------------------------------------------------------------------------------
# Add settings for extensions here
timezone = 'UTC'
default_text_search_config = 'zulip.english_us_search'
log_destination = 'stderr'
logging_collector = on
log_directory = '/var/log/postgresql'
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
log_rotation_age = 7d
log_rotation_size = 100MB
log_min_duration_statement = 500
log_line_prefix = '%m [%c]: [%l-1] '
log_checkpoints = on
log_lock_waits = on
log_temp_files = 0
log_autovacuum_min_duration = 100
autovacuum_freeze_max_age = 2000000000
vacuum_freeze_min_age = 1000000000
vacuum_freeze_table_age = 1800000000
# Performance settings
maintenance_work_mem = <%= scope["zulip::postgres_appdb_tuned::maintenance_work_mem"] %>MB
effective_cache_size = <%= scope["zulip::postgres_appdb_tuned::effective_cache_size"] %>MB
work_mem = <%= scope["zulip::postgres_appdb_tuned::work_mem"] %>MB
shared_buffers = <%= scope["zulip::postgres_appdb_tuned::shared_buffers"] %>MB
wal_buffers = 4MB
checkpoint_completion_target = 0.7
random_page_cost = 2.0