Patched
-------
 dbname | nspname | relkind |        relname        |   nrows   | nblocks |   mb
--------+---------+---------+-----------------------+-----------+---------+---------
 bench  | public  | r       | pgbench_accounts      | 100000000 | 1639345 | 12807.4
        |         | i       | accounts_mtime        | 100000000 |  385042 |  3008.1
        |         | i       | pgbench_accounts_pkey | 100000000 |  274194 |  2142.1
        |         | i       | tenner                | 100000000 |  115352 |   901.2
(4 rows)
 dbname | nspname | relkind |        relname        |  nrows   | nblocks |   mb
--------+---------+---------+-----------------------+----------+---------+---------
 bench  | public  | r       | pgbench_accounts      | 99995200 | 1676887 | 13170.2
        |         | i       | accounts_mtime        | 99995200 |  424521 |  3536.4
        |         | i       | pgbench_accounts_pkey | 99995200 |  274194 |  2142.1
        |         | i       | tenner                | 99995200 |  115352 |   901.2
(4 rows)


scaling factor: 1000
query mode: simple
number of clients: 8
number of threads: 2
duration: 3600 s
number of transactions actually processed: 17583489
latency average = 1.638 ms
tps = 4884.300945 (including connections establishing)
tps = 4884.303575 (excluding connections establishing)
statement latencies in milliseconds:
         0.001  \set aid1 random_gaussian(1, 100000 * :scale, 2.0)
         0.001  \set aid2 random_gaussian(1, 100000 * :scale, 2.5)
         0.000  \set delta random(-5000, 5000)
         0.046  BEGIN;
         0.175  UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid1;
         0.107  SELECT abalance FROM pgbench_accounts WHERE aid = :aid2;
         1.303  END;


scaling factor: 1000
query mode: simple
number of clients: 8
number of threads: 2
duration: 3600 s
number of transactions actually processed: 83497828
latency average = 0.345 ms
tps = 23193.839378 (including connections establishing)
tps = 23193.852972 (excluding connections establishing)
statement latencies in milliseconds:
         0.001  \set aid1 random_gaussian(1, 100000 * :scale, 2.0)
         0.001  \set aid2 random_gaussian(1, 100000 * :scale, 2.5)
         0.001  \set aid3 random_gaussian(1, 100000 * :scale, 3.2)
         0.035  BEGIN;
         0.091  SELECT abalance FROM pgbench_accounts WHERE aid = :aid1;
         0.088  SELECT abalance FROM pgbench_accounts WHERE aid = :aid2;
         0.087  SELECT abalance FROM pgbench_accounts WHERE aid = :aid3;
         0.039  END;


scaling factor: 1000
query mode: simple
number of clients: 8
number of threads: 2
duration: 3600 s
number of transactions actually processed: 2839
latency average = 10160.741 ms
tps = 0.787344 (including connections establishing)
tps = 0.787345 (excluding connections establishing)
statement latencies in milliseconds:
     10154.700  SELECT abalance FROM pgbench_accounts WHERE mtime > now() - INTERVAL '15min' ORDER BY aid;