starting vacuum...end.
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progress: 120.0 s, 287798.4 tps, lat 0.878 ms stddev 0.869
transaction type: <builtin: select only>
scaling factor: 1000
query mode: prepared
number of clients: 256
number of threads: 256
duration: 120 s
number of transactions actually processed: 35261632
latency average = 0.868 ms
latency stddev = 1.213 ms
tps = 293759.829764 (including connections establishing)
tps = 294872.544153 (excluding connections establishing)
