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@alamb alamb commented Jan 25, 2025

Draft PR to test the performance implications of #14223.

Which issue does this PR close?

Rationale for this change

There is concern that #14223 will slow down performance

I would like to gather some real data to find out, so I am preparing a branch to test. I don't know yet if I will propose to merge this

Update, my measurements suggest there is no change in benchmark performance

What changes are included in this PR?

Reverts

Are these changes tested?

I ran benchmark results;

Clickbench

--------------------
Benchmark clickbench_partitioned.json
--------------------
┏━━━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Query        ┃  main_base ┃ alamb_revert_14291 ┃        Change ┃
┡━━━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ QQuery 0     │     2.33ms │             2.30ms │     no change │
│ QQuery 1     │    40.38ms │            39.35ms │     no change │
│ QQuery 2     │    98.00ms │            99.64ms │     no change │
│ QQuery 3     │   108.62ms │           105.25ms │     no change │
│ QQuery 4     │   923.58ms │           934.56ms │     no change │
│ QQuery 5     │   966.92ms │           956.66ms │     no change │
│ QQuery 6     │    38.23ms │            38.43ms │     no change │
│ QQuery 7     │    44.28ms │            42.90ms │     no change │
│ QQuery 8     │  1053.30ms │          1022.30ms │     no change │
│ QQuery 9     │  1343.71ms │          1351.18ms │     no change │
│ QQuery 10    │   295.52ms │           281.84ms │     no change │
│ QQuery 11    │   340.04ms │           324.68ms │     no change │
│ QQuery 12    │  1007.39ms │           967.09ms │     no change │
│ QQuery 13    │  1296.34ms │          1292.14ms │     no change │
│ QQuery 14    │   902.32ms │           905.02ms │     no change │
│ QQuery 15    │  1086.61ms │          1087.18ms │     no change │
│ QQuery 16    │  2016.05ms │          1971.24ms │     no change │
│ QQuery 17    │  1852.81ms │          1847.69ms │     no change │
│ QQuery 18    │  3995.11ms │          3995.56ms │     no change │
│ QQuery 19    │    97.99ms │            96.54ms │     no change │
│ QQuery 20    │  1258.22ms │          1249.90ms │     no change │
│ QQuery 21    │  1495.27ms │          1502.42ms │     no change │
│ QQuery 22    │  2714.73ms │          2649.74ms │     no change │
│ QQuery 23    │  8924.91ms │          8700.99ms │     no change │
│ QQuery 24    │   528.87ms │           498.62ms │ +1.06x faster │
│ QQuery 25    │   434.64ms │           426.47ms │     no change │
│ QQuery 26    │   597.96ms │           578.93ms │     no change │
│ QQuery 27    │  1841.25ms │          1805.83ms │     no change │
│ QQuery 28    │ 13032.24ms │         12870.17ms │     no change │
│ QQuery 29    │   530.51ms │           538.89ms │     no change │
│ QQuery 30    │   915.49ms │           905.28ms │     no change │
│ QQuery 31    │   966.31ms │           951.39ms │     no change │
│ QQuery 32    │  3739.78ms │          3984.97ms │  1.07x slower │
│ QQuery 33    │  3999.29ms │          4091.47ms │     no change │
│ QQuery 34    │  4045.53ms │          4093.23ms │     no change │
│ QQuery 35    │  1369.10ms │          1365.20ms │     no change │
│ QQuery 36    │   238.67ms │           232.64ms │     no change │
│ QQuery 37    │    98.54ms │            97.98ms │     no change │
│ QQuery 38    │   137.36ms │           138.82ms │     no change │
│ QQuery 39    │   450.38ms │           435.35ms │     no change │
│ QQuery 40    │    56.76ms │            55.85ms │     no change │
│ QQuery 41    │    49.64ms │            48.00ms │     no change │
│ QQuery 42    │    64.35ms │            64.80ms │     no change │
└──────────────┴────────────┴────────────────────┴───────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ Benchmark Summary                 ┃            ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ Total Time (main_base)            │ 64999.31ms │
│ Total Time (alamb_revert_14291)   │ 64648.51ms │
│ Average Time (main_base)          │  1511.61ms │
│ Average Time (alamb_revert_14291) │  1503.45ms │
│ Queries Faster                    │          1 │
│ Queries Slower                    │          1 │
│ Queries with No Change            │         41 │
└───────────────────────────────────┴────────────┘

TPCH

--------------------
Benchmark tpch_mem_sf1.json
--------------------
┏━━━━━━━━━━━━━━┳━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Query        ┃ main_base ┃ alamb_revert_14291 ┃        Change ┃
┡━━━━━━━━━━━━━━╇━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ QQuery 1     │  129.31ms │           131.15ms │     no change │
│ QQuery 2     │   26.78ms │            27.34ms │     no change │
│ QQuery 3     │   40.49ms │            41.67ms │     no change │
│ QQuery 4     │   22.81ms │            22.92ms │     no change │
│ QQuery 5     │   64.09ms │            65.19ms │     no change │
│ QQuery 6     │    8.79ms │             8.59ms │     no change │
│ QQuery 7     │  129.23ms │           125.27ms │     no change │
│ QQuery 8     │   28.69ms │            29.49ms │     no change │
│ QQuery 9     │   75.24ms │            65.05ms │ +1.16x faster │
│ QQuery 10    │   60.30ms │            60.58ms │     no change │
│ QQuery 11    │   13.28ms │            13.39ms │     no change │
│ QQuery 12    │   39.85ms │            38.07ms │     no change │
│ QQuery 13    │   29.33ms │            29.23ms │     no change │
│ QQuery 14    │   10.49ms │            11.72ms │  1.12x slower │
│ QQuery 15    │   27.89ms │            28.80ms │     no change │
│ QQuery 16    │   23.40ms │            23.00ms │     no change │
│ QQuery 17    │  105.40ms │           100.46ms │     no change │
│ QQuery 18    │  247.95ms │           257.37ms │     no change │
│ QQuery 19    │   30.43ms │            30.58ms │     no change │
│ QQuery 20    │   42.96ms │            41.67ms │     no change │
│ QQuery 21    │  171.44ms │           180.23ms │  1.05x slower │
│ QQuery 22    │   18.16ms │            17.59ms │     no change │
└──────────────┴───────────┴────────────────────┴───────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓
┃ Benchmark Summary                 ┃           ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━┩
│ Total Time (main_base)            │ 1346.32ms │
│ Total Time (alamb_revert_14291)   │ 1349.33ms │
│ Average Time (main_base)          │   61.20ms │
│ Average Time (alamb_revert_14291) │   61.33ms │
│ Queries Faster                    │         1 │
│ Queries Slower                    │         2 │
│ Queries with No Change            │        19 │
└───────────────────────────────────┴───────────┘

Are there any user-facing changes?

@alamb
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alamb commented Feb 22, 2025

I think we decided we don't need to do this

@alamb alamb closed this Feb 22, 2025
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