From b5faba1284c4e5108c6fbe577daa33f933e7a4e0 Mon Sep 17 00:00:00 2001 From: Itagaki Takahiro Date: Mon, 7 Jun 2010 02:59:02 +0000 Subject: Ensure default-only storage parameters for TOAST relations to be initialized with proper values. Affected parameters are fillfactor, analyze_threshold, and analyze_scale_factor. Especially uninitialized fillfactor caused inefficient page usage because we built a StdRdOptions struct in which fillfactor is zero if any reloption is set for the toast table. In addition, we disallow toast.autovacuum_analyze_threshold and toast.autovacuum_analyze_scale_factor because we didn't actually support them; they are always ignored. Report by Rumko on pgsql-bugs on 12 May 2010. Analysis by Tom Lane and Alvaro Herrera. Patch by me. Backpatch to 8.4. --- src/backend/access/common/reloptions.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'src/backend/access/common/reloptions.c') diff --git a/src/backend/access/common/reloptions.c b/src/backend/access/common/reloptions.c index 2b099e806c9..cd4f59005a0 100644 --- a/src/backend/access/common/reloptions.c +++ b/src/backend/access/common/reloptions.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/common/reloptions.c,v 1.34 2010/03/11 21:47:19 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/common/reloptions.c,v 1.35 2010/06/07 02:59:02 itagaki Exp $ * *------------------------------------------------------------------------- */ @@ -116,7 +116,7 @@ static relopt_int intRelOpts[] = { "autovacuum_analyze_threshold", "Minimum number of tuple inserts, updates or deletes prior to analyze", - RELOPT_KIND_HEAP | RELOPT_KIND_TOAST + RELOPT_KIND_HEAP }, -1, 0, INT_MAX }, @@ -177,7 +177,7 @@ static relopt_real realRelOpts[] = { "autovacuum_analyze_scale_factor", "Number of tuple inserts, updates or deletes prior to analyze as a fraction of reltuples", - RELOPT_KIND_HEAP | RELOPT_KIND_TOAST + RELOPT_KIND_HEAP }, -1, 0.0, 100.0 }, @@ -1156,10 +1156,21 @@ default_reloptions(Datum reloptions, bool validate, relopt_kind kind) bytea * heap_reloptions(char relkind, Datum reloptions, bool validate) { + StdRdOptions *rdopts; + switch (relkind) { case RELKIND_TOASTVALUE: - return default_reloptions(reloptions, validate, RELOPT_KIND_TOAST); + rdopts = (StdRdOptions *) + default_reloptions(reloptions, validate, RELOPT_KIND_TOAST); + if (rdopts != NULL) + { + /* adjust default-only parameters for TOAST relations */ + rdopts->fillfactor = 100; + rdopts->autovacuum.analyze_threshold = -1; + rdopts->autovacuum.analyze_scale_factor = -1; + } + return (bytea *) rdopts; case RELKIND_RELATION: return default_reloptions(reloptions, validate, RELOPT_KIND_HEAP); default: -- cgit v1.2.3