pgq.tune_storage: turn autovac off for queue tables

3 files changed, 51 insertions, 0 deletions

diff --git a/sql/pgq/functions/pgq.create_queue.sql b/sql/pgq/functions/pgq.create_queue.sql
index 927a48cb..46ddf9b0 100644
--- a/sql/pgq/functions/pgq.create_queue.sql
+++ b/sql/pgq/functions/pgq.create_queue.sql
@@ -65,6 +65,8 @@ begin
 
     perform pgq.ticker(i_queue_name);
 
+    perform pgq.tune_storage(i_queue_name);
+
     return 1;
 end;
 $$ language plpgsql security definer;
diff --git a/sql/pgq/functions/pgq.tune_storage.sql b/sql/pgq/functions/pgq.tune_storage.sql
new file mode 100644
index 00000000..945a457c
--- /dev/null
+++ b/sql/pgq/functions/pgq.tune_storage.sql
@@ -0,0 +1,48 @@
+create or replace function pgq.tune_storage(i_queue_name text)
+returns integer as $$
+-- ----------------------------------------------------------------------
+-- Function: pgq.tune_storage(1)
+--
+--      Tunes storage settings for queue data tables
+-- ----------------------------------------------------------------------
+declare
+    tbl  text;
+    tbloid oid;
+    q record;
+    i int4;
+    sql text;
+    pgver int4;
+begin
+    pgver := current_setting('server_version_num');
+
+    select * into q
+      from pgq.queue where queue_name = i_queue_name;
+    if not found then
+        return 0;
+    end if;
+
+    for i in 0 .. (q.queue_ntables - 1) loop
+        tbl := q.queue_data_pfx || '_' || i;
+
+        -- set fillfactor
+        sql := 'alter table ' || tbl || ' set (fillfactor = 100';
+
+        -- autovacuum for 8.4+
+        if pgver >= 80400 then
+            sql := sql || ', autovacuum_enabled=off, toast.autovacuum_enabled =off';
+        end if;
+        sql := sql || ')';
+        execute sql;
+
+        -- autovacuum for 8.3
+        if pgver < 80400 then
+            tbloid := tbl::regclass::oid;
+            delete from pg_catalog.pg_autovacuum where vacrelid = tbloid;
+            insert into pg_catalog.pg_autovacuum values (tbloid, false, 0,0,0,0,0,0,0,0);
+        end if;
+    end loop;
+
+    return 1;
+end;
+$$ language plpgsql strict;
+
diff --git a/sql/pgq/structure/func_internal.sql b/sql/pgq/structure/func_internal.sql
index 8f042df8..4d2f750c 100644
--- a/sql/pgq/structure/func_internal.sql
+++ b/sql/pgq/structure/func_internal.sql
@@ -24,6 +24,7 @@
 -- Group: Random utility functions
 
 \i functions/pgq.grant_perms.sql
+\i functions/pgq.tune_storage.sql
 \i functions/pgq.force_tick.sql
 \i functions/pgq.seq_funcs.sql