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MDEV-30972: ANALYZE FORMAT=JSON: some time is unaccounted-for in BNL-H join

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After MDEV-30830 has added block-nl-join.r_unpack_time_ms, it became
apparent that there is some unaccounted-for time in BNL join operation,
namely the time that is spent after unpacking the join buffer record.

Fix this by adding a Gap_time_tracker to track the time that is spent
after unpacking the join buffer record and before any next time tracking.
The collected time is printed in block-nl-join.r_other_time_ms.

Reviewed by: Monty <monty@mariadb.org>
This commit is contained in:
Sergei Petrunia
2023-03-31 16:16:53 +03:00
parent 0269d82d53
commit 31536b2477
14 changed files with 180 additions and 9 deletions
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mysql-test/main/explain_json.result
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@ -1547,6 +1547,7 @@ ANALYZE
"r_loops": 10,
"r_filtered": 100,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 1
}
}