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| author | Bruce Momjian <bruce@momjian.us> | 2012-11-06 14:28:48 -0500 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2012-11-06 14:28:54 -0500 |
| commit | 3cef201c198c99831d2ee96eaa7de68799abea9a (patch) | |
| tree | a850eea0b9fcc8a07ad92dd6886d0c4147a3a8a5 | |
| parent | 329057fd8f967d08190cd355333430c604418d81 (diff) | |
In pg_upgrade, set synchronous_commit=off for the new cluster, to
improve performance when restoring the schema from the old cluster.
Backpatch to 9.2.
| -rw-r--r-- | contrib/pg_upgrade/server.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/contrib/pg_upgrade/server.c b/contrib/pg_upgrade/server.c index a9f9d85b787..49d4c8f9d73 100644 --- a/contrib/pg_upgrade/server.c +++ b/contrib/pg_upgrade/server.c @@ -208,13 +208,18 @@ start_postmaster(ClusterInfo *cluster) * maximum. We assume all datfrozenxid and relfrozen values are less than * a gap of 2000000000 from the current xid counter, so autovacuum will * not touch them. + * + * synchronous_commit=off improves object creation speed, and we only + * modify the new cluster, so only use it there. If there is a crash, + * the new cluster has to be recreated anyway. */ snprintf(cmd, sizeof(cmd), - "\"%s/pg_ctl\" -w -l \"%s\" -D \"%s\" -o \"-p %d %s %s%s\" start", + "\"%s/pg_ctl\" -w -l \"%s\" -D \"%s\" -o \"-p %d%s%s%s%s\" start", cluster->bindir, SERVER_LOG_FILE, cluster->pgconfig, cluster->port, (cluster->controldata.cat_ver >= - BINARY_UPGRADE_SERVER_FLAG_CAT_VER) ? "-b" : - "-c autovacuum=off -c autovacuum_freeze_max_age=2000000000", + BINARY_UPGRADE_SERVER_FLAG_CAT_VER) ? " -b" : + " -c autovacuum=off -c autovacuum_freeze_max_age=2000000000", + (cluster == &new_cluster) ? " -c synchronous_commit=off" : "", cluster->pgopts ? cluster->pgopts : "", socket_string); /* |