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Fix calculation of latency of pgbench backslash commands.

When we loop back to the top of doCustom after processing a backslashcommand, we must reset the "now" timestamp, because that's used tocalculate the time spent executing the previous command.Report and fix by Fabien Coelho. Backpatch to 9.5, where this was broken.

1 parenta664d47 commit2e75be6Copy full SHA for 2e75be6

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src/bin/pgbench
- pgbench.c

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`‎src/bin/pgbench/pgbench.c`

Lines changed: 3 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -1154,11 +1154,12 @@ doCustom(TState thread, CState st, instr_time conn_time, FILE logfile, AggVa`
`1154`	`1154`	`* first time it's needed, and reuse the same value throughout this`
`1155`	`1155`	`* function after that. This also ensures that e.g. the calculated latency`
`1156`	`1156`	`* reported in the log file and in the totals are the same. Zero means`
`1157`		`- * "not set yet".`
	`1157`	`+ * "not set yet". Reset "now" when we step to the next command with "goto`
	`1158`	`+ * top", though.`
`1158`	`1159`	`*/`
	`1160`	`+top:`
`1159`	`1161`	`INSTR_TIME_SET_ZERO(now);`
`1160`	`1162`
`1161`		`-top:`
`1162`	`1163`	`commands=sql_files[st->use_file];`
`1163`	`1164`
`1164`	`1165`	`/*`

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Commit2e75be6

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`‎src/bin/pgbench/pgbench.c`

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