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feat: lower repartition_file_min_size default from 10 MiB to 1 MiB - #22439

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adriangb merged 1 commit into
apache:mainfrom
adriangb:lower-repartition-file-min-size
May 27, 2026
Merged

feat: lower repartition_file_min_size default from 10 MiB to 1 MiB#22439
adriangb merged 1 commit into
apache:mainfrom
adriangb:lower-repartition-file-min-size

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@adriangb

@adriangbadriangb commented May 21, 2026

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Summary

repartition_file_min_size gates how aggressively repartitioned() splits file groups by byte range to fan a scan out across target_partitions worth of cores. At 10 MiB the default leaves several SF1-sized dimension tables (TPC-H `part` ≈ 24 MiB, TPC-DS `customer_address` ≈ 7 MiB, …) on a single partition, so any CPU-bound per-batch work in the scan (filter eval, dictionary expansion, etc.) is single-threaded even when the cluster has plenty of idle cores.

At 1 MiB those same files split cleanly into `target_partitions` byte ranges. The cost (more `open()` calls, more metadata loads) is small in absolute terms (≤10 extra opens per file in the worst case, each amortised over the row-group / page-index reads) and the existing knob is still available for workloads where it matters.

Benchmark numbers

12-core, SF1, with the existing dynamic-filter-pushdown defaults preserved:

Suitedefault (10 MiB)with this PR (1 MiB)
TPC-H total841 ms776 ms
TPC-H Q22~30 ms~17 ms
TPC-DS total11.0 s11.1 s
ClickBench total21.7 s19.0 s

Test plan

  • `cargo test --test sqllogictests` — all 472 files pass after the information_schema snapshot and a csv_files reset.
  • `run benchmarks`

@adriangb

adriangb commented May 21, 2026

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run benchmarks

@github-actionsgithub-actionsBot added documentation Improvements or additions to documentation sqllogictest SQL Logic Tests (.slt) common Related to common crate labels May 21, 2026
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adriangbot commented May 21, 2026

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🤖 Benchmark running (GKE) | trigger
Instance:c4a-highmem-16 (12 vCPU / 65 GiB) | Linux bench-c4511840612-263-zrwps 6.12.68+ #1 SMP Wed Apr 1 02:23:28 UTC 2026 aarch64 GNU/Linux

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected

Comparing lower-repartition-file-min-size (5f6b84f) to 50d74a7 (merge-base) diff using: tpch
Results will be posted here when complete

File an issue against this benchmark runner

@adriangbot

adriangbot commented May 21, 2026

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🤖 Benchmark running (GKE) | trigger
Instance:c4a-highmem-16 (12 vCPU / 65 GiB) | Linux bench-c4511840612-261-p76vb 6.12.68+ #1 SMP Wed Apr 1 02:23:28 UTC 2026 aarch64 GNU/Linux

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected

Comparing lower-repartition-file-min-size (5f6b84f) to 50d74a7 (merge-base) diff using: clickbench_partitioned
Results will be posted here when complete

File an issue against this benchmark runner

@adriangbot

adriangbot commented May 21, 2026

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🤖 Benchmark running (GKE) | trigger
Instance:c4a-highmem-16 (12 vCPU / 65 GiB) | Linux bench-c4511840612-262-mnchx 6.12.68+ #1 SMP Wed Apr 1 02:23:28 UTC 2026 aarch64 GNU/Linux

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected

Comparing lower-repartition-file-min-size (5f6b84f) to 50d74a7 (merge-base) diff using: tpcds
Results will be posted here when complete

File an issue against this benchmark runner

@adriangbot

adriangbot commented May 21, 2026

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🤖 Benchmark completed (GKE) | trigger

Instance:c4a-highmem-16 (12 vCPU / 65 GiB)

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected
Details

Comparing HEAD and lower-repartition-file-min-size
--------------------
Benchmark tpch_sf1.json
--------------------
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Query ┃ HEAD ┃ lower-repartition-file-min-size ┃ Change ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ QQuery 1 │ 38.42 / 40.10 ±1.42 / 42.17 ms │ 38.50 / 39.01 ±0.96 / 40.94 ms │ no change │
│ QQuery 2 │ 19.74 / 20.59 ±1.16 / 22.86 ms │ 18.70 / 19.30 ±0.67 / 20.60 ms │ +1.07x faster │
│ QQuery 3 │ 32.53 / 34.11 ±1.56 / 36.92 ms │ 31.24 / 32.68 ±1.56 / 34.63 ms │ no change │
│ QQuery 4 │ 17.56 / 17.75 ±0.12 / 17.92 ms │ 17.57 / 17.92 ±0.34 / 18.56 ms │ no change │
│ QQuery 5 │ 42.37 / 43.42 ±1.56 / 46.52 ms │ 37.74 / 39.75 ±1.26 / 41.31 ms │ +1.09x faster │
│ QQuery 6 │ 16.43 / 16.54 ±0.09 / 16.67 ms │ 16.38 / 16.53 ±0.11 / 16.68 ms │ no change │
│ QQuery 7 │ 46.05 / 48.40 ±1.66 / 50.28 ms │ 43.98 / 46.77 ±1.68 / 49.22 ms │ no change │
│ QQuery 8 │ 44.92 / 45.18 ±0.34 / 45.83 ms │ 43.15 / 43.96 ±1.12 / 46.19 ms │ no change │
│ QQuery 9 │ 49.80 / 50.99 ±0.76 / 51.82 ms │ 49.29 / 50.19 ±0.70 / 50.97 ms │ no change │
│ QQuery 10 │ 64.06 / 64.77 ±0.56 / 65.41 ms │ 42.78 / 43.18 ±0.55 / 44.24 ms │ +1.50x faster │
│ QQuery 11 │ 13.53 / 13.80 ±0.15 / 13.96 ms │ 13.46 / 13.65 ±0.13 / 13.79 ms │ no change │
│ QQuery 12 │ 24.26 / 25.29 ±0.96 / 26.63 ms │ 24.10 / 24.33 ±0.18 / 24.53 ms │ no change │
│ QQuery 13 │ 33.51 / 34.79 ±0.97 / 35.96 ms │ 33.66 / 34.31 ±0.57 / 35.07 ms │ no change │
│ QQuery 14 │ 25.53 / 25.84 ±0.18 / 26.04 ms │ 23.95 / 25.60 ±1.83 / 28.17 ms │ no change │
│ QQuery 15 │ 31.73 / 31.94 ±0.17 / 32.16 ms │ 31.68 / 32.34 ±0.81 / 33.94 ms │ no change │
│ QQuery 16 │ 14.89 / 15.00 ±0.11 / 15.14 ms │ 14.23 / 14.45 ±0.19 / 14.74 ms │ no change │
│ QQuery 17 │ 75.49 / 76.47 ±1.26 / 78.91 ms │ 74.70 / 75.89 ±1.18 / 77.60 ms │ no change │
│ QQuery 18 │ 62.44 / 63.45 ±1.33 / 66.03 ms │ 59.48 / 60.42 ±0.85 / 61.93 ms │ no change │
│ QQuery 19 │ 33.93 / 34.78 ±1.12 / 36.95 ms │ 33.17 / 33.67 ±0.33 / 33.96 ms │ no change │
│ QQuery 20 │ 38.08 / 38.23 ±0.14 / 38.46 ms │ 32.59 / 32.83 ±0.21 / 33.17 ms │ +1.16x faster │
│ QQuery 21 │ 57.62 / 58.90 ±1.71 / 62.29 ms │ 55.93 / 57.16 ±1.08 / 58.85 ms │ no change │
│ QQuery 22 │ 23.57 / 24.21 ±0.77 / 25.58 ms │ 14.17 / 14.42 ±0.18 / 14.72 ms │ +1.68x faster │
└───────────┴────────────────────────────────┴─────────────────────────────────┴───────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┓
┃ Benchmark Summary ┃ ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━┩
│ Total Time (HEAD) │ 824.54ms │
│ Total Time (lower-repartition-file-min-size) │ 768.37ms │
│ Average Time (HEAD) │ 37.48ms │
│ Average Time (lower-repartition-file-min-size) │ 34.93ms │
│ Queries Faster │ 5 │
│ Queries Slower │ 0 │
│ Queries with No Change │ 17 │
│ Queries with Failure │ 0 │
└────────────────────────────────────────────────┴──────────┘

Resource Usage

tpch — base (merge-base)

MetricValue
Wall time5.0s
Peak memory5.6 GiB
Avg memory5.1 GiB
CPU user29.9s
CPU sys2.3s
Peak spill0 B

tpch — branch

MetricValue
Wall time5.0s
Peak memory5.7 GiB
Avg memory4.9 GiB
CPU user30.0s
CPU sys2.4s
Peak spill0 B

File an issue against this benchmark runner

@adriangbot

adriangbot commented May 21, 2026

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🤖 Benchmark completed (GKE) | trigger

Instance:c4a-highmem-16 (12 vCPU / 65 GiB)

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected
Details

Comparing HEAD and lower-repartition-file-min-size
--------------------
Benchmark tpcds_sf1.json
--------------------
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Query ┃ HEAD ┃ lower-repartition-file-min-size ┃ Change ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ QQuery 1 │ 5.66 / 6.24 ±0.90 / 8.03 ms │ 5.76 / 6.30 ±0.88 / 8.05 ms │ no change │
│ QQuery 2 │ 79.73 / 79.97 ±0.21 / 80.30 ms │ 79.85 / 80.25 ±0.25 / 80.53 ms │ no change │
│ QQuery 3 │ 28.54 / 28.95 ±0.32 / 29.49 ms │ 28.55 / 28.97 ±0.26 / 29.36 ms │ no change │
│ QQuery 4 │ 495.97 / 501.25 ±3.10 / 504.69 ms │ 471.37 / 474.43 ±2.73 / 479.29 ms │ +1.06x faster │
│ QQuery 5 │ 50.65 / 50.91 ±0.26 / 51.34 ms │ 51.77 / 53.15 ±1.70 / 56.43 ms │ no change │
│ QQuery 6 │ 35.36 / 35.57 ±0.24 / 35.89 ms │ 35.77 / 36.35 ±0.33 / 36.75 ms │ no change │
│ QQuery 7 │ 106.57 / 108.32 ±1.92 / 111.98 ms │ 94.84 / 95.73 ±0.57 / 96.50 ms │ +1.13x faster │
│ QQuery 8 │ 36.11 / 36.68 ±0.51 / 37.57 ms │ 36.66 / 37.68 ±1.18 / 39.97 ms │ no change │
│ QQuery 9 │ 50.32 / 53.15 ±1.85 / 55.15 ms │ 53.15 / 54.23 ±1.11 / 56.37 ms │ no change │
│ QQuery 10 │ 79.57 / 80.51 ±0.50 / 81.04 ms │ 67.19 / 67.44 ±0.24 / 67.76 ms │ +1.19x faster │
│ QQuery 11 │ 304.26 / 307.29 ±2.19 / 310.57 ms │ 286.46 / 289.16 ±1.75 / 291.95 ms │ +1.06x faster │
│ QQuery 12 │ 28.31 / 28.75 ±0.29 / 29.08 ms │ 28.16 / 28.55 ±0.30 / 29.01 ms │ no change │
│ QQuery 13 │ 125.14 / 126.14 ±1.14 / 128.34 ms │ 119.56 / 120.15 ±0.32 / 120.50 ms │ no change │
│ QQuery 14 │ 503.04 / 505.33 ±1.85 / 507.55 ms │ 500.95 / 502.74 ±1.50 / 505.26 ms │ no change │
│ QQuery 15 │ 60.21 / 61.44 ±0.95 / 62.64 ms │ 57.58 / 58.30 ±0.47 / 58.79 ms │ +1.05x faster │
│ QQuery 16 │ 6.30 / 6.47 ±0.14 / 6.66 ms │ 6.45 / 6.67 ±0.33 / 7.33 ms │ no change │
│ QQuery 17 │ 80.44 / 80.79 ±0.30 / 81.31 ms │ 80.33 / 80.81 ±0.44 / 81.51 ms │ no change │
│ QQuery 18 │ 150.02 / 150.91 ±0.49 / 151.44 ms │ 122.63 / 124.56 ±1.19 / 126.29 ms │ +1.21x faster │
│ QQuery 19 │ 40.64 / 40.89 ±0.23 / 41.32 ms │ 41.19 / 41.74 ±0.62 / 42.94 ms │ no change │
│ QQuery 20 │ 34.96 / 35.46 ±0.27 / 35.72 ms │ 34.63 / 35.48 ±1.17 / 37.77 ms │ no change │
│ QQuery 21 │ 16.57 / 16.90 ±0.28 / 17.26 ms │ 16.68 / 16.87 ±0.11 / 17.00 ms │ no change │
│ QQuery 22 │ 61.15 / 62.39 ±0.81 / 63.35 ms │ 62.17 / 62.63 ±0.33 / 63.03 ms │ no change │
│ QQuery 23 │ 473.31 / 480.42 ±3.92 / 484.62 ms │ 467.56 / 471.60 ±2.39 / 474.10 ms │ no change │
│ QQuery 24 │ 231.90 / 235.61 ±3.89 / 242.89 ms │ 222.95 / 224.48 ±1.80 / 227.13 ms │ no change │
│ QQuery 25 │ 113.00 / 113.63 ±0.52 / 114.47 ms │ 112.08 / 113.43 ±1.08 / 115.34 ms │ no change │
│ QQuery 26 │ 69.61 / 70.22 ±0.57 / 71.01 ms │ 57.62 / 57.95 ±0.26 / 58.26 ms │ +1.21x faster │
│ QQuery 27 │ 6.40 / 6.51 ±0.19 / 6.88 ms │ 6.53 / 6.67 ±0.14 / 6.93 ms │ no change │
│ QQuery 28 │ 56.57 / 61.12 ±2.28 / 62.50 ms │ 61.76 / 62.57 ±0.54 / 63.17 ms │ no change │
│ QQuery 29 │ 97.65 / 99.05 ±1.03 / 100.43 ms │ 97.60 / 97.81 ±0.16 / 98.07 ms │ no change │
│ QQuery 30 │ 29.72 / 30.15 ±0.43 / 30.87 ms │ 32.06 / 33.16 ±1.83 / 36.81 ms │ 1.10x slower │
│ QQuery 31 │ 110.57 / 111.76 ±1.69 / 115.06 ms │ 111.62 / 112.14 ±0.43 / 112.85 ms │ no change │
│ QQuery 32 │ 20.05 / 20.28 ±0.23 / 20.69 ms │ 19.78 / 20.03 ±0.35 / 20.71 ms │ no change │
│ QQuery 33 │ 38.16 / 38.43 ±0.20 / 38.67 ms │ 38.07 / 38.54 ±0.30 / 38.96 ms │ no change │
│ QQuery 34 │ 9.05 / 9.46 ±0.35 / 9.88 ms │ 9.13 / 9.47 ±0.22 / 9.82 ms │ no change │
│ QQuery 35 │ 79.55 / 79.80 ±0.20 / 80.00 ms │ 75.17 / 76.36 ±1.11 / 77.84 ms │ no change │
│ QQuery 36 │ 5.79 / 5.95 ±0.14 / 6.18 ms │ 5.84 / 5.98 ±0.15 / 6.26 ms │ no change │
│ QQuery 37 │ 6.74 / 6.84 ±0.06 / 6.92 ms │ 6.72 / 6.89 ±0.12 / 7.06 ms │ no change │
│ QQuery 38 │ 68.43 / 69.31 ±0.66 / 70.45 ms │ 62.33 / 62.99 ±0.50 / 63.78 ms │ +1.10x faster │
│ QQuery 39 │ 97.36 / 98.03 ±0.54 / 98.97 ms │ 97.55 / 98.93 ±1.23 / 100.89 ms │ no change │
│ QQuery 40 │ 22.27 / 22.60 ±0.26 / 22.98 ms │ 22.72 / 23.54 ±0.64 / 24.45 ms │ no change │
│ QQuery 41 │ 11.02 / 11.25 ±0.15 / 11.48 ms │ 10.93 / 11.20 ±0.18 / 11.48 ms │ no change │
│ QQuery 42 │ 23.60 / 23.90 ±0.31 / 24.46 ms │ 23.48 / 23.86 ±0.34 / 24.46 ms │ no change │
│ QQuery 43 │ 4.55 / 4.68 ±0.13 / 4.93 ms │ 4.70 / 4.76 ±0.08 / 4.91 ms │ no change │
│ QQuery 44 │ 10.19 / 11.43 ±1.99 / 15.40 ms │ 10.40 / 10.51 ±0.10 / 10.67 ms │ +1.09x faster │
│ QQuery 45 │ 39.59 / 40.57 ±0.68 / 41.66 ms │ 37.79 / 38.36 ±0.42 / 38.86 ms │ +1.06x faster │
│ QQuery 46 │ 12.75 / 12.98 ±0.19 / 13.17 ms │ 11.24 / 11.38 ±0.17 / 11.71 ms │ +1.14x faster │
│ QQuery 47 │ 223.52 / 226.65 ±2.77 / 231.79 ms │ 225.54 / 227.94 ±1.94 / 230.59 ms │ no change │
│ QQuery 48 │ 102.38 / 102.89 ±0.44 / 103.59 ms │ 96.68 / 98.18 ±1.00 / 99.67 ms │ no change │
│ QQuery 49 │ 78.14 / 79.56 ±1.30 / 81.67 ms │ 79.12 / 80.00 ±0.65 / 80.89 ms │ no change │
│ QQuery 50 │ 59.64 / 60.23 ±0.34 / 60.64 ms │ 59.29 / 60.51 ±1.37 / 63.05 ms │ no change │
│ QQuery 51 │ 92.17 / 94.01 ±1.23 / 95.96 ms │ 94.11 / 95.09 ±1.50 / 98.07 ms │ no change │
│ QQuery 52 │ 23.74 / 24.05 ±0.35 / 24.73 ms │ 23.87 / 24.20 ±0.30 / 24.75 ms │ no change │
│ QQuery 53 │ 29.12 / 29.43 ±0.23 / 29.75 ms │ 29.33 / 29.57 ±0.21 / 29.88 ms │ no change │
│ QQuery 54 │ 53.75 / 54.14 ±0.31 / 54.53 ms │ 54.60 / 56.05 ±1.62 / 59.22 ms │ no change │
│ QQuery 55 │ 23.43 / 23.56 ±0.11 / 23.74 ms │ 23.32 / 24.14 ±0.93 / 25.95 ms │ no change │
│ QQuery 56 │ 38.33 / 38.73 ±0.37 / 39.21 ms │ 38.50 / 38.93 ±0.39 / 39.55 ms │ no change │
│ QQuery 57 │ 173.55 / 175.20 ±1.24 / 177.09 ms │ 175.69 / 177.16 ±1.41 / 179.64 ms │ no change │
│ QQuery 58 │ 116.01 / 117.70 ±0.98 / 118.76 ms │ 115.24 / 115.75 ±0.47 / 116.60 ms │ no change │
│ QQuery 59 │ 116.61 / 117.05 ±0.36 / 117.38 ms │ 117.47 / 118.16 ±0.74 / 119.56 ms │ no change │
│ QQuery 60 │ 39.07 / 39.90 ±1.04 / 41.92 ms │ 38.90 / 39.40 ±0.33 / 39.82 ms │ no change │
│ QQuery 61 │ 12.49 / 12.65 ±0.20 / 13.03 ms │ 12.60 / 12.75 ±0.15 / 13.04 ms │ no change │
│ QQuery 62 │ 45.68 / 45.90 ±0.17 / 46.11 ms │ 45.67 / 46.53 ±1.39 / 49.31 ms │ no change │
│ QQuery 63 │ 29.28 / 29.58 ±0.26 / 29.98 ms │ 30.00 / 30.13 ±0.15 / 30.36 ms │ no change │
│ QQuery 64 │ 457.68 / 461.65 ±3.21 / 466.81 ms │ 393.46 / 399.25 ±4.63 / 406.84 ms │ +1.16x faster │
│ QQuery 65 │ 145.65 / 148.32 ±1.66 / 150.51 ms │ 145.68 / 147.18 ±1.12 / 148.45 ms │ no change │
│ QQuery 66 │ 77.84 / 80.26 ±2.71 / 85.36 ms │ 77.46 / 79.47 ±3.33 / 86.11 ms │ no change │
│ QQuery 67 │ 241.81 / 246.80 ±4.56 / 255.36 ms │ 245.55 / 249.62 ±3.39 / 253.78 ms │ no change │
│ QQuery 68 │ 12.65 / 12.86 ±0.16 / 13.12 ms │ 11.39 / 11.55 ±0.19 / 11.90 ms │ +1.11x faster │
│ QQuery 69 │ 75.12 / 75.52 ±0.21 / 75.67 ms │ 61.48 / 61.87 ±0.45 / 62.58 ms │ +1.22x faster │
│ QQuery 70 │ 104.13 / 108.16 ±3.51 / 114.68 ms │ 104.37 / 110.93 ±7.90 / 126.24 ms │ no change │
│ QQuery 71 │ 35.06 / 35.59 ±0.37 / 36.19 ms │ 34.93 / 35.61 ±0.39 / 36.09 ms │ no change │
│ QQuery 72 │ 2084.20 / 2225.30 ±109.92 / 2394.98 ms │ 2064.93 / 2123.91 ±44.83 / 2182.04 ms │ no change │
│ QQuery 73 │ 8.78 / 9.10 ±0.31 / 9.67 ms │ 8.94 / 9.62 ±0.47 / 10.30 ms │ 1.06x slower │
│ QQuery 74 │ 176.17 / 179.86 ±3.84 / 187.27 ms │ 165.45 / 167.50 ±1.89 / 170.65 ms │ +1.07x faster │
│ QQuery 75 │ 145.18 / 147.24 ±2.86 / 152.89 ms │ 147.10 / 148.65 ±2.29 / 153.20 ms │ no change │
│ QQuery 76 │ 35.11 / 35.29 ±0.13 / 35.50 ms │ 35.53 / 35.61 ±0.07 / 35.73 ms │ no change │
│ QQuery 77 │ 59.67 / 59.99 ±0.20 / 60.18 ms │ 60.51 / 61.88 ±1.59 / 64.99 ms │ no change │
│ QQuery 78 │ 186.39 / 189.44 ±1.71 / 190.97 ms │ 186.07 / 187.86 ±1.29 / 190.07 ms │ no change │
│ QQuery 79 │ 67.10 / 67.67 ±0.78 / 69.22 ms │ 66.88 / 67.43 ±0.34 / 67.85 ms │ no change │
│ QQuery 80 │ 97.99 / 100.54 ±3.61 / 107.69 ms │ 99.60 / 100.77 ±0.69 / 101.72 ms │ no change │
│ QQuery 81 │ 23.62 / 23.84 ±0.24 / 24.28 ms │ 25.18 / 25.82 ±0.53 / 26.50 ms │ 1.08x slower │
│ QQuery 82 │ 16.02 / 16.51 ±0.54 / 17.52 ms │ 16.15 / 17.37 ±1.61 / 20.53 ms │ 1.05x slower │
│ QQuery 83 │ 35.67 / 35.95 ±0.18 / 36.20 ms │ 39.54 / 40.15 ±0.53 / 41.14 ms │ 1.12x slower │
│ QQuery 84 │ 42.63 / 43.96 ±1.47 / 45.85 ms │ 34.88 / 35.05 ±0.11 / 35.21 ms │ +1.25x faster │
│ QQuery 85 │ 134.67 / 135.55 ±0.52 / 136.15 ms │ 107.49 / 110.01 ±3.10 / 115.77 ms │ +1.23x faster │
│ QQuery 86 │ 24.46 / 24.81 ±0.28 / 25.28 ms │ 24.73 / 25.26 ±0.49 / 26.15 ms │ no change │
│ QQuery 87 │ 68.65 / 70.23 ±1.66 / 73.40 ms │ 63.36 / 64.31 ±0.69 / 65.35 ms │ +1.09x faster │
│ QQuery 88 │ 61.62 / 62.05 ±0.37 / 62.57 ms │ 62.13 / 62.54 ±0.36 / 62.99 ms │ no change │
│ QQuery 89 │ 35.62 / 35.75 ±0.10 / 35.87 ms │ 35.49 / 36.38 ±1.13 / 38.56 ms │ no change │
│ QQuery 90 │ 16.72 / 16.96 ±0.29 / 17.54 ms │ 16.64 / 17.17 ±0.73 / 18.61 ms │ no change │
│ QQuery 91 │ 51.31 / 51.62 ±0.36 / 52.31 ms │ 44.53 / 45.12 ±0.58 / 46.22 ms │ +1.14x faster │
│ QQuery 92 │ 28.68 / 29.08 ±0.38 / 29.61 ms │ 28.83 / 29.08 ±0.24 / 29.49 ms │ no change │
│ QQuery 93 │ 49.88 / 50.59 ±0.46 / 51.13 ms │ 50.08 / 50.65 ±0.44 / 51.25 ms │ no change │
│ QQuery 94 │ 37.05 / 37.34 ±0.34 / 38.00 ms │ 38.12 / 39.02 ±0.99 / 40.86 ms │ no change │
│ QQuery 95 │ 83.37 / 86.12 ±2.36 / 90.34 ms │ 83.77 / 84.45 ±0.59 / 85.37 ms │ no change │
│ QQuery 96 │ 23.83 / 24.17 ±0.42 / 24.97 ms │ 24.02 / 24.16 ±0.21 / 24.56 ms │ no change │
│ QQuery 97 │ 45.70 / 46.12 ±0.22 / 46.30 ms │ 45.67 / 46.03 ±0.19 / 46.18 ms │ no change │
│ QQuery 98 │ 41.68 / 42.79 ±0.59 / 43.37 ms │ 41.87 / 42.78 ±0.90 / 44.31 ms │ no change │
│ QQuery 99 │ 69.39 / 69.93 ±0.34 / 70.34 ms │ 68.56 / 69.74 ±0.99 / 71.43 ms │ no change │
└───────────┴────────────────────────────────────────┴───────────────────────────────────────┴───────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ Benchmark Summary ┃ ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ Total Time (HEAD) │ 10426.49ms │
│ Total Time (lower-repartition-file-min-size) │ 10063.12ms │
│ Average Time (HEAD) │ 105.32ms │
│ Average Time (lower-repartition-file-min-size) │ 101.65ms │
│ Queries Faster │ 19 │
│ Queries Slower │ 5 │
│ Queries with No Change │ 75 │
│ Queries with Failure │ 0 │
└────────────────────────────────────────────────┴────────────┘

Resource Usage

tpcds — base (merge-base)

MetricValue
Wall time55.0s
Peak memory7.0 GiB
Avg memory6.3 GiB
CPU user234.1s
CPU sys5.5s
Peak spill0 B

tpcds — branch

MetricValue
Wall time55.0s
Peak memory6.9 GiB
Avg memory6.1 GiB
CPU user233.1s
CPU sys5.5s
Peak spill0 B

File an issue against this benchmark runner

@adriangbadriangb mentioned this pull request May 21, 2026
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adriangbot commented May 21, 2026

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🤖 Benchmark completed (GKE) | trigger

Instance:c4a-highmem-16 (12 vCPU / 65 GiB)

CPU Details (lscpu)
Architecture: aarch64
CPU op-mode(s): 64-bit
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: ARM
Model name: Neoverse-V2
Model: 1
Thread(s) per core: 1
Core(s) per cluster: 16
Socket(s): -
Cluster(s): 1
Stepping: r0p1
BogoMIPS: 2000.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh rng bti
L1d cache: 1 MiB (16 instances)
L1i cache: 1 MiB (16 instances)
L2 cache: 32 MiB (16 instances)
L3 cache: 80 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Not affected
Vulnerability Vmscape: Not affected
Details

Comparing HEAD and lower-repartition-file-min-size
--------------------
Benchmark clickbench_partitioned.json
--------------------
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Query ┃ HEAD ┃ lower-repartition-file-min-size ┃ Change ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ QQuery 0 │ 1.19 / 4.94 ±7.22 / 19.39 ms │ 1.23 / 4.88 ±7.15 / 19.17 ms │ no change │
│ QQuery 1 │ 12.73 / 13.25 ±0.32 / 13.66 ms │ 12.83 / 13.29 ±0.28 / 13.68 ms │ no change │
│ QQuery 2 │ 35.90 / 36.61 ±0.56 / 37.59 ms │ 36.71 / 37.08 ±0.35 / 37.75 ms │ no change │
│ QQuery 3 │ 31.83 / 32.29 ±0.34 / 32.77 ms │ 31.52 / 32.62 ±1.03 / 34.54 ms │ no change │
│ QQuery 4 │ 240.58 / 245.88 ±3.69 / 250.55 ms │ 246.07 / 250.69 ±3.63 / 256.78 ms │ no change │
│ QQuery 5 │ 288.85 / 290.48 ±1.31 / 292.48 ms │ 290.08 / 291.80 ±1.78 / 294.92 ms │ no change │
│ QQuery 6 │ 1.19 / 1.35 ±0.23 / 1.79 ms │ 1.19 / 1.32 ±0.23 / 1.77 ms │ no change │
│ QQuery 7 │ 14.04 / 14.22 ±0.20 / 14.58 ms │ 14.09 / 14.20 ±0.08 / 14.32 ms │ no change │
│ QQuery 8 │ 344.37 / 350.28 ±4.51 / 356.06 ms │ 339.99 / 346.68 ±3.58 / 350.31 ms │ no change │
│ QQuery 9 │ 484.42 / 502.51 ±10.33 / 512.67 ms │ 486.52 / 504.91 ±13.10 / 523.97 ms │ no change │
│ QQuery 10 │ 74.35 / 77.13 ±3.85 / 84.69 ms │ 73.03 / 73.90 ±0.48 / 74.42 ms │ no change │
│ QQuery 11 │ 86.37 / 87.95 ±1.23 / 89.70 ms │ 83.42 / 84.23 ±0.56 / 84.97 ms │ no change │
│ QQuery 12 │ 300.56 / 307.78 ±5.85 / 316.17 ms │ 284.66 / 289.38 ±4.74 / 296.51 ms │ +1.06x faster │
│ QQuery 13 │ 387.84 / 410.89 ±16.72 / 439.88 ms │ 378.65 / 398.90 ±15.91 / 416.16 ms │ no change │
│ QQuery 14 │ 299.61 / 308.39 ±5.58 / 316.44 ms │ 303.29 / 306.31 ±2.88 / 311.58 ms │ no change │
│ QQuery 15 │ 299.25 / 303.11 ±2.38 / 306.73 ms │ 301.98 / 306.30 ±2.96 / 310.42 ms │ no change │
│ QQuery 16 │ 659.95 / 666.22 ±4.29 / 673.17 ms │ 674.00 / 683.33 ±7.55 / 693.26 ms │ no change │
│ QQuery 17 │ 659.51 / 671.52 ±7.70 / 680.23 ms │ 666.72 / 682.27 ±9.52 / 692.01 ms │ no change │
│ QQuery 18 │ 1340.85 / 1385.15 ±41.23 / 1441.00 ms │ 1356.50 / 1389.15 ±21.64 / 1414.20 ms │ no change │
│ QQuery 19 │ 29.17 / 38.77 ±7.92 / 50.31 ms │ 29.18 / 42.71 ±21.77 / 85.55 ms │ 1.10x slower │
│ QQuery 20 │ 524.84 / 534.44 ±7.26 / 546.97 ms │ 521.79 / 531.52 ±7.36 / 541.86 ms │ no change │
│ QQuery 21 │ 605.00 / 611.54 ±4.13 / 617.11 ms │ 601.76 / 610.35 ±4.63 / 614.27 ms │ no change │
│ QQuery 22 │ 1074.65 / 1091.83 ±14.98 / 1117.46 ms │ 1076.33 / 1098.59 ±12.17 / 1112.48 ms │ no change │
│ QQuery 23 │ 3296.90 / 3342.09 ±26.95 / 3370.82 ms │ 3322.50 / 3358.94 ±20.16 / 3377.13 ms │ no change │
│ QQuery 24 │ 44.18 / 50.32 ±10.35 / 70.95 ms │ 43.05 / 47.13 ±6.25 / 59.53 ms │ +1.07x faster │
│ QQuery 25 │ 115.89 / 118.66 ±3.13 / 124.52 ms │ 116.07 / 118.26 ±1.29 / 120.08 ms │ no change │
│ QQuery 26 │ 43.99 / 45.87 ±1.41 / 47.97 ms │ 43.94 / 45.49 ±1.91 / 49.25 ms │ no change │
│ QQuery 27 │ 692.02 / 699.59 ±10.22 / 719.58 ms │ 697.27 / 702.37 ±4.67 / 710.55 ms │ no change │
│ QQuery 28 │ 3140.38 / 3146.09 ±4.89 / 3152.80 ms │ 3139.57 / 3163.07 ±21.23 / 3198.19 ms │ no change │
│ QQuery 29 │ 41.94 / 47.71 ±6.70 / 57.98 ms │ 41.78 / 43.30 ±2.52 / 48.33 ms │ +1.10x faster │
│ QQuery 30 │ 310.54 / 334.80 ±24.72 / 381.05 ms │ 328.35 / 333.71 ±3.74 / 338.48 ms │ no change │
│ QQuery 31 │ 294.53 / 307.85 ±10.17 / 324.36 ms │ 301.20 / 308.97 ±4.02 / 312.72 ms │ no change │
│ QQuery 32 │ 1026.84 / 1036.66 ±11.58 / 1058.87 ms │ 1018.91 / 1026.91 ±8.98 / 1044.03 ms │ no change │
│ QQuery 33 │ 1568.82 / 1617.67 ±44.38 / 1691.71 ms │ 1530.15 / 1577.67 ±37.22 / 1618.80 ms │ no change │
│ QQuery 34 │ 1574.50 / 1621.70 ±42.02 / 1690.07 ms │ 1533.96 / 1618.27 ±45.85 / 1672.99 ms │ no change │
│ QQuery 35 │ 319.99 / 364.57 ±70.16 / 504.46 ms │ 312.84 / 331.56 ±24.13 / 378.35 ms │ +1.10x faster │
│ QQuery 36 │ 71.10 / 73.37 ±2.36 / 77.77 ms │ 68.23 / 74.70 ±6.27 / 83.71 ms │ no change │
│ QQuery 37 │ 36.99 / 43.20 ±5.20 / 49.35 ms │ 38.36 / 40.35 ±2.39 / 45.04 ms │ +1.07x faster │
│ QQuery 38 │ 41.82 / 45.28 ±2.33 / 48.95 ms │ 42.12 / 46.05 ±2.88 / 49.38 ms │ no change │
│ QQuery 39 │ 166.53 / 168.48 ±1.43 / 170.52 ms │ 147.94 / 159.49 ±7.27 / 170.09 ms │ +1.06x faster │
│ QQuery 40 │ 15.14 / 17.41 ±3.20 / 23.73 ms │ 14.79 / 15.35 ±0.46 / 15.95 ms │ +1.13x faster │
│ QQuery 41 │ 15.30 / 15.68 ±0.30 / 16.18 ms │ 14.97 / 16.65 ±1.91 / 19.64 ms │ 1.06x slower │
│ QQuery 42 │ 13.87 / 14.29 ±0.39 / 14.97 ms │ 13.80 / 15.50 ±2.15 / 19.71 ms │ 1.08x slower │
└───────────┴───────────────────────────────────────┴───────────────────────────────────────┴───────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ Benchmark Summary ┃ ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ Total Time (HEAD) │ 21097.79ms │
│ Total Time (lower-repartition-file-min-size) │ 21038.15ms │
│ Average Time (HEAD) │ 490.65ms │
│ Average Time (lower-repartition-file-min-size) │ 489.26ms │
│ Queries Faster │ 7 │
│ Queries Slower │ 3 │
│ Queries with No Change │ 33 │
│ Queries with Failure │ 0 │
└────────────────────────────────────────────────┴────────────┘

Resource Usage

clickbench_partitioned — base (merge-base)

MetricValue
Wall time110.0s
Peak memory31.0 GiB
Avg memory23.1 GiB
CPU user1091.1s
CPU sys74.0s
Peak spill0 B

clickbench_partitioned — branch

MetricValue
Wall time110.0s
Peak memory30.9 GiB
Avg memory23.3 GiB
CPU user1087.1s
CPU sys73.7s
Peak spill0 B

File an issue against this benchmark runner

@adriangb
adriangbforce-pushed the lower-repartition-file-min-size branch from 5f6b84f to 918f2f5CompareMay 25, 2026 15:43
@adriangb
adriangb marked this pull request as ready for review May 26, 2026 17:33
@rajesh-cmyk@adriangb
feat: lower repartition_file_min_size default from 10 MiB to 1 MiB
af56183
`repartition_file_min_size` gates how aggressively `repartitioned()` splits
file groups by byte range to fan a scan out across `target_partitions`
worth of cores. At 10 MiB the default leaves several SF1-sized
dimension tables (TPC-H `part` ≈ 24 MiB, TPC-DS `customer_address` ≈ 7 MiB,
…) on a single partition, so any CPU-bound per-batch work in the scan
(filter eval, dictionary expansion, etc.) is single-threaded even when
the cluster has plenty of idle cores.
At 1 MiB those same files split cleanly into `target_partitions` byte
ranges, e.g. TPC-H Q22 drops from 30 ms → 17 ms (~1.75× faster) on a
12-core SF1 run by parallelising the `part_with_promo` filter.
The cost — more `open()` calls, more metadata loads — is small (10 vs 1
extra opens per file in the worst case, each amortised over the
row-group / page-index reads) and the existing knob is still available
for workloads where it matters.
The csv_files.slt reset is switched from `SET ... = 10485760` to
`RESET ...` so the test continues to round-trip the configured default
regardless of what that default is.
@adriangb
adriangbforce-pushed the lower-repartition-file-min-size branch from 918f2f5 to af56183CompareMay 26, 2026 17:41
@adriangb

adriangb commented May 26, 2026•
edited
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@Dandandan I know you evaluated this in #19690 and then closed the issue, presumably because the benchmarks did not reproduce an improvement you ere seeing locally. Maybe it's just the new benchmark runner, but this looks like there are consistent improvements for TPCH and some minor improvements for TPC-DS

@Dandandan

Dandandan commented May 26, 2026

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@Dandandan I know you evaluated this in #19690 and then closed the issue, presumably because the benchmarks did not reproduce an improvement you ere seeing locally. Maybe it's just the new benchmark runner, but this looks like there are consistent improvements for TPCH and some minor improvements for TPC-DS

Yeah, I agree it looks good!

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adriangb added this pull request to the merge queueMay 26, 2026
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adriangb commented May 26, 2026

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Thanks!

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github-merge-queueBot removed this pull request from the merge queue due to no response for status checks May 26, 2026
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adriangb added this pull request to the merge queueMay 27, 2026
Merged via the queue into apache:main with commit 070d013May 27, 2026
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adriangb deleted the lower-repartition-file-min-size branch May 27, 2026 22:07
This was referenced Jul 2, 2026
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commonRelated to common cratedocumentationImprovements or additions to documentationsqllogictestSQL Logic Tests (.slt)

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