Master
------
        relname        |   nrows   | blk_before | mb_before | blk_after | mb_after |  diff
-----------------------+-----------+------------+-----------+-----------+----------+--------
 pgbench_accounts      | 300000000 |    4918033 |   38422.1 |   5065575 |  39574.8 |  +3.0%
 accounts_mtime        | 300000000 |    1155119 |    9024.4 |   1287656 |  10059.8 | +11.5%
 fiver                 | 300000000 |     427039 |    3336.2 |    567755 |   4435.6 | +33.0%
 pgbench_accounts_pkey | 300000000 |     822573 |    6426.4 |   1033344 |   8073.0 | +25.6%
 score                 | 300000000 |     284022 |    2218.9 |    458502 |   3582.0 | +61.4%
 tenner                | 300000000 |     346050 |    2703.5 |    417985 |   3265.5 | +20.8%
(6 rows)

DB size: 65.2..72.3 (+7.1GB / +10.9%)

scaling factor: 3000
query mode: simple
number of clients: 8
number of threads: 2
duration: 14400 s
number of transactions actually processed: 33073335
latency average = 3.483 ms
tps = 2296.758808 (including connections establishing)
tps = 2296.759063 (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)
         0.033  BEGIN;
         0.291  UPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid1;
         0.136  SELECT abalance FROM pgbench_accounts WHERE aid = :aid2;
         3.018  END;

scaling factor: 3000
query mode: simple
number of clients: 8
number of threads: 2
duration: 14400 s
number of transactions actually processed: 7127980
latency average = 16.162 ms
tps = 494.998003 (including connections establishing)
tps = 494.998059 (excluding connections establishing)
statement latencies in milliseconds:
         0.002  \set aid2 random_gaussian(1, 100000 * :scale, 3.0)
         0.196  SELECT abalance FROM pgbench_accounts WHERE aid = :aid2;
         3.290  INSERT INTO pgbench_accounts
        12.680  DELETE FROM pgbench_accounts WHERE aid IN

scaling factor: 3000
query mode: simple
number of clients: 1
number of threads: 1
duration: 14400 s
number of transactions actually processed: 40
latency average = 363313.472 ms
tps = 0.002752 (including connections establishing)
tps = 0.002752 (excluding connections establishing)
statement latencies in milliseconds:
    363313.426  SELECT abalance, pg_sleep(300) FROM pgbench_accounts WHERE mtime > now() - INTERVAL '15min' ORDER BY aid LIMIT 1;
postgres@db:~/pg-delete-deduplication$ . ~/pg-delete-deduplication/env.sh
postgres@db:~/pg-delete-deduplication$ date
Sun Jan  3 20:15:33 UTC 2021
postgres@db:~/pg-delete-deduplication$ $PGPATH/bin/pgbench -p $PGPORT -f $MYHOME/testcase3.pgbench -s3000 -r -c1     -T $((3600*4)) bench
starting vacuum...end.
transaction type: /var/lib/postgresql/pg-delete-deduplication/testcase3.pgbench

scaling factor: 3000
query mode: simple
number of clients: 1
number of threads: 1
duration: 14400 s
number of transactions actually processed: 46
latency average = 317890.248 ms
tps = 0.003146 (including connections establishing)
tps = 0.003146 (excluding connections establishing)
statement latencies in milliseconds:
    317890.206  SELECT abalance, pg_sleep(300) FROM pgbench_accounts WHERE mtime > now() - INTERVAL '15min' ORDER BY aid LIMIT 1;