database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

7
mysql-test/main/analyze_format_json.result
View File

@ -154,6 +154,7 @@ ANALYZE
"r_loops": 20,
"r_filtered": 100,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 60
}
}
@ -198,6 +199,7 @@ ANALYZE
"r_loops": 20,
"r_filtered": 15.83333333,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 60
}
}
@ -661,6 +663,7 @@ ANALYZE
"r_loops": 2,
"r_filtered": null,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 0
},
"subqueries": [
@ -754,6 +757,7 @@ ANALYZE
"r_loops": 2,
"r_filtered": null,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 0
},
"subqueries": [
@ -789,6 +793,7 @@ ANALYZE
"r_loops": 0,
"r_filtered": null,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": null
}
}
@ -927,6 +932,7 @@ ANALYZE
"r_loops": 100,
"r_filtered": 0.424285714,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 700
}
}
@ -980,6 +986,7 @@ ANALYZE
"r_loops": 100,
"r_filtered": 100,
"r_unpack_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"r_effective_rows": 2.97
}
}