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Commit2b959d4

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Reduce the default for max_worker_processes back to 8.
Commitb460f5d -- at my suggestion --increased the default value of max_worker_processes from 8 to 16, onthe theory that this would be harmless and convenient for users.Unfortunately, this caused some buildfarm machines with low connectionlimits to start failing, so apparently it's not harmless after all.
1 parent88f626f commit2b959d4

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5 files changed

+6
-6
lines changed

5 files changed

+6
-6
lines changed

‎doc/src/sgml/config.sgml

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@@ -1982,7 +1982,7 @@ include_dir 'conf.d'
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<para>
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Sets the maximum number of background processes that the system
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can support. This parameter can only be set at server start. The
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default is16.
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default is8.
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</para>
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<para>

‎src/backend/utils/init/globals.c

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@@ -121,7 +121,7 @@ intreplacement_sort_tuples = 150000;
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*/
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intNBuffers=1000;
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intMaxConnections=90;
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intmax_worker_processes=16;
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intmax_worker_processes=8;
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intmax_parallel_workers=8;
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intMaxBackends=0;
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‎src/backend/utils/misc/guc.c

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@@ -2477,7 +2477,7 @@ static struct config_int ConfigureNamesInt[] =
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NULL,
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},
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&max_worker_processes,
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16,0,MAX_BACKENDS,
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8,0,MAX_BACKENDS,
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check_max_worker_processes,NULL,NULL
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},
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‎src/backend/utils/misc/postgresql.conf.sample

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@@ -161,7 +161,7 @@
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# - Asynchronous Behavior -
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#effective_io_concurrency = 1# 1-1000; 0 disables prefetching
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#max_worker_processes =16# (change requires restart)
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#max_worker_processes =8# (change requires restart)
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#max_parallel_workers_per_gather = 2# taken from max_worker_processes
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#max_parallel_workers = 8 # total maximum number of worker_processes
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#old_snapshot_threshold = -1# 1min-60d; -1 disables; 0 is immediate

‎src/bin/pg_resetxlog/pg_resetxlog.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -584,7 +584,7 @@ GuessControlValues(void)
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ControlFile.wal_log_hints= false;
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ControlFile.track_commit_timestamp= false;
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ControlFile.MaxConnections=100;
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ControlFile.max_worker_processes=16;
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ControlFile.max_worker_processes=8;
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ControlFile.max_prepared_xacts=0;
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ControlFile.max_locks_per_xact=64;
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@@ -800,7 +800,7 @@ RewriteControlFile(void)
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ControlFile.wal_log_hints= false;
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ControlFile.track_commit_timestamp= false;
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ControlFile.MaxConnections=100;
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ControlFile.max_worker_processes=16;
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ControlFile.max_worker_processes=8;
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ControlFile.max_prepared_xacts=0;
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ControlFile.max_locks_per_xact=64;
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