$ eatmydata /tmp/bench.sh
createtable single
tps = 320.293146 (including connections establishing)
tps = 320.334981 (excluding connections establishing)
262152	/tmp/perf/pg_xlog
createtable parallel
tps = 1516.095491 (including connections establishing)
tps = 1516.488664 (excluding connections establishing)
1163272	/tmp/perf/pg_xlog
altertable single
tps = 139.474141 (including connections establishing)
tps = 139.491721 (excluding connections establishing)
163848	/tmp/perf/pg_xlog
altertable parallel
tps = 774.868029 (including connections establishing)
tps = 775.136842 (excluding connections establishing)
851976	/tmp/perf/pg_xlog
createfunction single
tps = 2938.380801 (including connections establishing)
tps = 2938.711692 (excluding connections establishing)
81928	/tmp/perf/pg_xlog
createfunction parallel
tps = 20603.023567 (including connections establishing)
tps = 20608.799987 (excluding connections establishing)
458760	/tmp/perf/pg_xlog

$ /tmp/bench.sh
createtable single
tps = 51.014096 (including connections establishing)
tps = 51.020329 (excluding connections establishing)
49160	/tmp/perf/pg_xlog
createtable parallel
tps = 171.012045 (including connections establishing)
tps = 171.054406 (excluding connections establishing)
147464	/tmp/perf/pg_xlog
altertable single
tps = 9.138758 (including connections establishing)
tps = 9.139863 (excluding connections establishing)
32776	/tmp/perf/pg_xlog
altertable parallel
tps = 45.109269 (including connections establishing)
tps = 45.122066 (excluding connections establishing)
65544	/tmp/perf/pg_xlog
createfunction single
tps = 131.192719 (including connections establishing)
tps = 131.209112 (excluding connections establishing)
16392	/tmp/perf/pg_xlog
createfunction parallel
tps = 624.830173 (including connections establishing)
tps = 625.017525 (excluding connections establishing)
32776	/tmp/perf/pg_xlog

-- patch applied --
$ eatmydata /tmp/bench.sh
createtable single
tps = 329.063474 (including connections establishing)
tps = 329.104147 (excluding connections establishing)
262152	/tmp/perf/pg_xlog
createtable parallel
tps = 1462.524932 (including connections establishing)
tps = 1462.872552 (excluding connections establishing)
1130504	/tmp/perf/pg_xlog
altertable single
tps = 141.091905 (including connections establishing)
tps = 141.108352 (excluding connections establishing)
163848	/tmp/perf/pg_xlog
altertable parallel
tps = 812.810544 (including connections establishing)
tps = 813.026734 (excluding connections establishing)
901128	/tmp/perf/pg_xlog
createfunction single
tps = 3384.068190 (including connections establishing)
tps = 3384.460953 (excluding connections establishing)
81928	/tmp/perf/pg_xlog
createfunction parallel
tps = 20744.363972 (including connections establishing)
tps = 20750.135978 (excluding connections establishing)
458760	/tmp/perf/pg_xlog

$ /tmp/bench.sh
createtable single
tps = 42.522505 (including connections establishing)
tps = 42.527233 (excluding connections establishing)
49160	/tmp/perf/pg_xlog
createtable parallel
tps = 148.753762 (including connections establishing)
tps = 148.794361 (excluding connections establishing)
131080	/tmp/perf/pg_xlog
altertable single
tps = 9.524616 (including connections establishing)
tps = 9.525757 (excluding connections establishing)
32776	/tmp/perf/pg_xlog
altertable parallel
tps = 49.209278 (including connections establishing)
tps = 49.223312 (excluding connections establishing)
65544	/tmp/perf/pg_xlog
createfunction single
tps = 132.325526 (including connections establishing)
tps = 132.340677 (excluding connections establishing)
16392	/tmp/perf/pg_xlog
createfunction parallel
tps = 654.730078 (including connections establishing)
tps = 654.951506 (excluding connections establishing)
32776	/tmp/perf/pg_xlog

-- patch applied wal_level = logical --
$ eatmydata /tmp/bench.sh
createtable single
tps = 323.503496 (including connections establishing)
tps = 323.542429 (excluding connections establishing)
311304	/tmp/perf/pg_xlog
createtable parallel
tps = 1537.166484 (including connections establishing)
tps = 1537.599205 (excluding connections establishing)
1441800	/tmp/perf/pg_xlog
altertable single
tps = 137.785443 (including connections establishing)
tps = 137.802088 (excluding connections establishing)
196616	/tmp/perf/pg_xlog
altertable parallel
tps = 759.320764 (including connections establishing)
tps = 759.616314 (excluding connections establishing)
1064968	/tmp/perf/pg_xlog
createfunction single
tps = 3206.263449 (including connections establishing)
tps = 3206.635093 (excluding connections establishing)
98312	/tmp/perf/pg_xlog
createfunction parallel
tps = 20454.430246 (including connections establishing)
tps = 20460.920317 (excluding connections establishing)
557064	/tmp/perf/pg_xlog

$ /tmp/bench.sh
createtable single
tps = 44.728192 (including connections establishing)
tps = 44.733640 (excluding connections establishing)
65544	/tmp/perf/pg_xlog
createtable parallel
tps = 180.100543 (including connections establishing)
tps = 180.158944 (excluding connections establishing)
196616	/tmp/perf/pg_xlog
altertable single
tps = 10.651403 (including connections establishing)
tps = 10.652567 (excluding connections establishing)
32776	/tmp/perf/pg_xlog
altertable parallel
tps = 46.401373 (including connections establishing)
tps = 46.414657 (excluding connections establishing)
81928	/tmp/perf/pg_xlog
createfunction single
tps = 136.372357 (including connections establishing)
tps = 136.388755 (excluding connections establishing)
16392	/tmp/perf/pg_xlog
createfunction parallel
tps = 685.702432 (including connections establishing)
tps = 685.883334 (excluding connections establishing)
32776	/tmp/perf/pg_xlog