metrics: Optimize queries.
Avoid full Builds table scans. * src/cuirass/metrics.scm (db-average-build-start-time-per-eval, db-average-build-complete-time-per-eval, db-evaluation-completion-speed): Rewrite query to avoid full Builds table scans.
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@ -103,8 +103,7 @@ SELECT 100 * CAST(SUM(status > 0) as float) / COUNT(*) FROM
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SELECT AVG(B.starttime - E.evaltime) FROM
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(SELECT id, evaltime
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FROM Evaluations WHERE id = " eval ") E
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LEFT JOIN
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(SELECT id, evaluation, starttime FROM Builds) B
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LEFT JOIN Builds as B
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ON E.id = B.evaluation and B.starttime > 0
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GROUP BY E.id;")))
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(and=> (expect-one-row rows) (cut vector-ref <> 0)))))
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@ -116,8 +115,7 @@ GROUP BY E.id;")))
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SELECT AVG(B.stoptime - E.evaltime) FROM
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(SELECT id, evaltime
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FROM Evaluations WHERE id = " eval ") E
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LEFT JOIN
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(SELECT id, evaluation, stoptime FROM Builds) B
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LEFT JOIN Builds as B
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ON E.id = B.evaluation and B.stoptime > 0
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GROUP BY E.id;")))
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(and=> (expect-one-row rows) (cut vector-ref <> 0)))))
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@ -142,8 +140,7 @@ SELECT
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END - E.evaltime) FROM
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(SELECT id, evaltime
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FROM Evaluations WHERE id = " eval ") E
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LEFT JOIN
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(SELECT id, evaluation, status, stoptime FROM Builds) B
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LEFT JOIN Builds as B
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ON E.id = B.evaluation and B.stoptime > 0
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GROUP BY E.id;")))
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(and=> (expect-one-row rows) (cut vector-ref <> 0)))))
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