********* master, frequent term:

test=# explain analyze select count(*) from pglist where fts @@ to_tsquery( 'simple', 'tom & lane' );

                                                                  QUERY PLAN                                                                  
----------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=112620.76..112620.77 rows=1 width=8) (actual time=19862.702..19862.702 rows=1 loops=1)
   ->  Bitmap Heap Scan on pglist  (cost=542.90..112486.92 rows=53535 width=0) (actual time=1502.176..19743.815 rows=222813 loops=1)
         Recheck Cond: (fts @@ '''tom'' & ''lane'''::tsquery)
         Heap Blocks: exact=105992
         ->  Bitmap Index Scan on pglist_fts_rum  (cost=0.00..529.51 rows=53535 width=0) (actual time=1441.195..1441.195 rows=222813 loops=1)
               Index Cond: (fts @@ '''tom'' & ''lane'''::tsquery)
 Planning time: 180.332 ms
 Execution time: 19865.841 ms
(8 rows)


********* index-only, frequent term:

test=# explain analyze select count(*) from pglist where fts @@ to_tsquery( 'simple', 'tom & lane' );

                                                                  QUERY PLAN                                                                  
----------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=56911.69..56911.70 rows=1 width=8) (actual time=1543.316..1543.316 rows=1 loops=1)
   ->  Bitmap Heap Scan on pglist  (cost=542.01..56778.14 rows=53420 width=0) (actual time=1496.301..1529.001 rows=222813 loops=1)
         Recheck Cond: (fts @@ '''tom'' & ''lane'''::tsquery)
         Heap Blocks: exact=105992
         Heap Fetches: 0
         ->  Bitmap Index Scan on pglist_fts_rum  (cost=0.00..528.65 rows=53420 width=0) (actual time=1457.597..1457.597 rows=222813 loops=1)
               Index Cond: (fts @@ '''tom'' & ''lane'''::tsquery)
 Planning time: 221.965 ms
 Execution time: 1545.217 ms
(9 rows)


********* master, infrequent term:

test=# set work_mem to 8192; explain analyze select count(*) from pglist where fts @@ to_tsquery( 'simple', 'ildus' );
SET
                                                             QUERY PLAN                                                              
-------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=17514.67..17514.68 rows=1 width=8) (actual time=331.773..331.774 rows=1 loops=1)
   ->  Bitmap Heap Scan on pglist  (cost=71.28..17502.00 rows=5069 width=0) (actual time=103.387..331.366 rows=143 loops=1)
         Recheck Cond: (fts @@ '''ildus'''::tsquery)
         Heap Blocks: exact=121
         ->  Bitmap Index Scan on pglist_fts_rum  (cost=0.00..70.02 rows=5069 width=0) (actual time=64.870..64.870 rows=143 loops=1)
               Index Cond: (fts @@ '''ildus'''::tsquery)
 Planning time: 205.332 ms
 Execution time: 332.806 ms


********* index-only, infrequent term:

test=# set work_mem to 8192; explain analyze select count(*) from pglist where fts @@ to_tsquery( 'simple', 'ildus' );
SET
                                                             QUERY PLAN                                                              
-------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=8830.99..8831.00 rows=1 width=8) (actual time=145.989..145.989 rows=1 loops=1)
   ->  Bitmap Heap Scan on pglist  (cost=71.28..8818.32 rows=5069 width=0) (actual time=115.310..145.924 rows=143 loops=1)
         Recheck Cond: (fts @@ '''ildus'''::tsquery)
         Heap Blocks: exact=121
         ->  Bitmap Index Scan on pglist_fts_rum  (cost=0.00..70.02 rows=5069 width=0) (actual time=57.375..57.375 rows=143 loops=1)
               Index Cond: (fts @@ '''ildus'''::tsquery)
 Planning time: 196.365 ms
 Execution time: 146.677 ms
(8 rows)