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Increase the default for wal_sender_delay from 200ms to 1s. Now that WAL

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sender is immediately woken up by transaction commit, there's no need to
wake up so aggressively.
This commit is contained in:
Heikki Linnakangas
2011-02-26 23:36:24 +02:00
parent 42e5223648
commit be6668d6ef
4 changed files with 8 additions and 5 deletions
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2
src/backend/replication/walsender.c
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@ -73,7 +73,7 @@ bool am_walsender = false; /* Am I a walsender process ? */
/* User-settable parameters for walsender */
int max_wal_senders = 0; /* the maximum number of concurrent walsenders */
int WalSndDelay = 200; /* max sleep time between some actions */
int WalSndDelay = 1000; /* max sleep time between some actions */
/*
* These variables are used similarly to openLogFile/Id/Seg/Off,

2
src/backend/utils/misc/guc.c
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@ -1843,7 +1843,7 @@ static struct config_int ConfigureNamesInt[] =
GUC_UNIT_MS
},
&WalSndDelay,
200, 1, 10000, NULL, NULL
1000, 1, 10000, NULL, NULL
},
{

2
src/backend/utils/misc/postgresql.conf.sample
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@ -188,7 +188,7 @@
#max_wal_senders = 0 # max number of walsender processes
# (change requires restart)
#wal_sender_delay = 200ms # walsender cycle time, 1-10000 milliseconds
#wal_sender_delay = 1s # walsender cycle time, 1-10000 milliseconds
#wal_keep_segments = 0 # in logfile segments, 16MB each; 0 disables
#vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed