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-20854: ANALYZE for statements: not clear where the time is spent

Browse Source 
Count the "gap" time between table accesses and display it as
r_other_time_ms in the "table" element.

* The advantage of this approach is that it doesn't add any new
  my_timer_cycles() calls.
* The disadvantage is that the definition of what is done during
  "other time" is not that clear: it includes checking the WHERE
  (for this table), constructing index lookup tuple (for the next table)
  writing to GROUP BY temporary table (as we dont account for that time
  separately [yet], etc)
This commit is contained in:
Sergei Petrunia
2019-11-09 21:03:23 +03:00
parent 0117d0e65a
commit 68ed3a81f2
27 changed files with 448 additions and 206 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
mysql-test/main/intersect_all.result
View File

@ -120,7 +120,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -138,7 +139,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -156,7 +158,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -179,7 +182,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 2,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100,
"materialized": {
@ -201,7 +205,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -219,7 +224,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -237,7 +243,8 @@ ANALYZE
"r_loops": 1,
"rows": 4,
"r_rows": 4,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -380,7 +387,8 @@ ANALYZE
"r_loops": 1,
"rows": 6,
"r_rows": 6,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -398,7 +406,8 @@ ANALYZE
"r_loops": 1,
"rows": 5,
"r_rows": 5,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
@ -409,7 +418,8 @@ ANALYZE
"r_loops": 1,
"rows": 7,
"r_rows": 7,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
@ -437,7 +447,8 @@ ANALYZE
"r_loops": 1,
"rows": 6,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100,
"materialized": {
@ -459,7 +470,8 @@ ANALYZE
"r_loops": 1,
"rows": 6,
"r_rows": 6,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
@ -477,7 +489,8 @@ ANALYZE
"r_loops": 1,
"rows": 5,
"r_rows": 5,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
@ -488,7 +501,8 @@ ANALYZE
"r_loops": 1,
"rows": 7,
"r_rows": 7,
"r_total_time_ms": "REPLACED",
"r_table_time_ms": "REPLACED",
"r_other_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},