adriangbot commented on PR #11449:
URL: https://github.com/apache/arrow-rs/pull/11449#issuecomment-6067746393

   🤖 Benchmark completed (GKE) | 
[trigger](https://github.com/apache/arrow-rs/pull/11449#issuecomment-6066957853)
   
   **Target:** arrow_writer
   
   Comparing main (92be67a7f8cce3ee87f4234def067bb067cfd9a1) to main 
[diff](https://github.com/apache/arrow-rs/compare/92be67a7f8cce3ee87f4234def067bb067cfd9a1..92be67a7f8cce3ee87f4234def067bb067cfd9a1)
   
   <details><summary>Run configuration</summary>
   
   ```yaml
   run benchmark arrow_writer
   baseline:
     ref: main
   changed:
     ref: main
   shards: 4
   
   ```
   
   </details>
   
   <details><summary>Details</summary>
   
   ```
   group                                                            base        
                           changed
   -----                                                            ----        
                           -------
   bool/bloom_filter                                                1.00     
11.1±0.06ms    22.6 MB/sec    1.02     11.3±0.08ms    22.1 MB/sec
   bool/cdc                                                         1.02     
13.1±0.12ms    19.0 MB/sec    1.00     12.9±0.03ms    19.4 MB/sec
   bool/default                                                     1.00      
8.9±0.03ms    28.1 MB/sec    1.00      8.9±0.02ms    28.1 MB/sec
   bool/number_distinct_values                                      1.00     
18.9±0.05ms    13.2 MB/sec    1.00     19.0±0.06ms    13.2 MB/sec
   bool/parquet_2                                                   1.00     
10.9±0.09ms    23.0 MB/sec    1.00     10.9±0.06ms    22.9 MB/sec
   bool/zstd                                                        1.00      
9.4±0.03ms    26.5 MB/sec    1.00      9.4±0.04ms    26.5 MB/sec
   bool/zstd_parquet_2                                              1.00     
11.2±0.06ms    22.2 MB/sec    1.00     11.3±0.05ms    22.2 MB/sec
   bool_non_null/bloom_filter                                       1.00      
5.1±0.01ms    24.7 MB/sec    1.01      5.1±0.02ms    24.5 MB/sec
   bool_non_null/cdc                                                1.00      
3.8±0.03ms    32.9 MB/sec    1.04      4.0±0.04ms    31.6 MB/sec
   bool_non_null/default                                            1.01      
2.3±0.01ms    54.4 MB/sec    1.00      2.3±0.01ms    54.7 MB/sec
   bool_non_null/number_distinct_values                             1.00     
15.7±0.12ms     8.0 MB/sec    1.00     15.7±0.23ms     7.9 MB/sec
   bool_non_null/parquet_2                                          1.00      
4.7±0.02ms    26.7 MB/sec    1.01      4.7±0.01ms    26.5 MB/sec
   bool_non_null/zstd                                               1.00      
2.7±0.02ms    46.8 MB/sec    1.02      2.7±0.01ms    46.0 MB/sec
   bool_non_null/zstd_parquet_2                                     1.00      
5.0±0.02ms    24.8 MB/sec    1.00      5.0±0.01ms    24.8 MB/sec
   bool_ree/bloom_filter                                            1.01     
28.2±0.14ms     7.5 MB/sec    1.00     27.9±0.09ms     7.6 MB/sec
   bool_ree/cdc                                                     1.00     
28.4±0.10ms     7.5 MB/sec    1.01     28.8±0.08ms     7.4 MB/sec
   bool_ree/default                                                 1.00     
25.1±0.04ms     8.5 MB/sec    1.01     25.3±0.06ms     8.4 MB/sec
   bool_ree/number_distinct_values                                  1.00     
37.2±0.11ms     5.7 MB/sec    1.01     37.5±0.09ms     5.7 MB/sec
   bool_ree/parquet_2                                               1.02     
26.5±0.16ms     8.0 MB/sec    1.00     26.0±0.09ms     8.2 MB/sec
   bool_ree/zstd                                                    1.01     
26.2±0.16ms     8.1 MB/sec    1.00     25.8±0.08ms     8.3 MB/sec
   bool_ree/zstd_parquet_2                                          1.00     
26.3±0.03ms     8.1 MB/sec    1.01     26.5±0.08ms     8.0 MB/sec
   decimal/bloom_filter                                             1.04    
172.6±0.64ms   347.7 MB/sec    1.00    165.4±1.75ms   362.8 MB/sec
   decimal/cdc                                                      1.01    
106.0±0.91ms   566.0 MB/sec    1.00    104.5±0.71ms   574.2 MB/sec
   decimal/default                                                  1.00     
81.3±0.72ms   738.1 MB/sec    1.04     84.9±1.22ms   706.9 MB/sec
   decimal/number_distinct_values                                   1.05    
318.3±4.66ms   188.5 MB/sec    1.00    301.9±0.84ms   198.8 MB/sec
   decimal/parquet_2                                                1.02    
209.2±3.11ms   286.8 MB/sec    1.00    204.1±2.31ms   294.0 MB/sec
   decimal/zstd                                                     1.05    
135.6±1.21ms   442.4 MB/sec    1.00    129.0±0.64ms   465.2 MB/sec
   decimal/zstd_parquet_2                                           1.01    
230.7±2.75ms   260.1 MB/sec    1.00    227.4±3.07ms   263.8 MB/sec
   fixed_size_binary_ree/bloom_filter                               1.00     
63.7±0.41ms    15.8 MB/sec    1.02     65.0±0.37ms    15.5 MB/sec
   fixed_size_binary_ree/cdc                                        1.04     
74.8±0.61ms    13.5 MB/sec    1.00     72.2±0.40ms    13.9 MB/sec
   fixed_size_binary_ree/default                                    1.00     
62.5±0.32ms    16.1 MB/sec    1.04     64.9±0.44ms    15.5 MB/sec
   fixed_size_binary_ree/number_distinct_values                     1.03     
83.5±1.70ms    12.1 MB/sec    1.00     80.7±0.36ms    12.5 MB/sec
   fixed_size_binary_ree/parquet_2                                  1.00     
62.3±0.37ms    16.2 MB/sec    1.02     63.5±0.34ms    15.9 MB/sec
   fixed_size_binary_ree/zstd                                       1.04     
65.7±1.29ms    15.3 MB/sec    1.00     63.4±0.38ms    15.9 MB/sec
   fixed_size_binary_ree/zstd_parquet_2                             1.00     
63.0±0.39ms    16.0 MB/sec    1.02     64.2±0.38ms    15.7 MB/sec
   float_with_nans/bloom_filter                                     1.01     
88.7±0.39ms   157.9 MB/sec    1.00     87.8±0.49ms   159.5 MB/sec
   float_with_nans/cdc                                              1.01     
78.2±0.72ms   179.1 MB/sec    1.00     77.2±0.35ms   181.4 MB/sec
   float_with_nans/default                                          1.00     
70.9±0.30ms   197.5 MB/sec    1.00     70.8±0.35ms   197.9 MB/sec
   float_with_nans/number_distinct_values                           1.02    
173.0±1.49ms    80.9 MB/sec    1.00    169.8±0.67ms    82.5 MB/sec
   float_with_nans/parquet_2                                        1.00     
70.6±0.41ms   198.2 MB/sec    1.03     72.7±1.07ms   192.6 MB/sec
   float_with_nans/zstd                                             1.00    
108.5±0.30ms   129.1 MB/sec    1.00    108.9±0.46ms   128.6 MB/sec
   float_with_nans/zstd_parquet_2                                   1.01    
116.8±0.50ms   119.9 MB/sec    1.00    115.4±0.35ms   121.4 MB/sec
   fsb/bloom_filter                                                 1.00     
12.7±0.11ms  1273.7 MB/sec    1.07     13.5±0.07ms  1190.5 MB/sec
   fsb/cdc                                                          1.00     
14.7±0.11ms  1095.1 MB/sec    1.06     15.7±0.16ms  1029.1 MB/sec
   fsb/default                                                      1.05     
12.2±0.24ms  1326.0 MB/sec    1.00     11.5±0.15ms  1396.8 MB/sec
   fsb/number_distinct_values                                       1.04     
16.9±0.36ms   952.9 MB/sec    1.00     16.3±0.14ms   991.6 MB/sec
   fsb/parquet_2                                                    1.02     
12.9±0.07ms  1250.3 MB/sec    1.00     12.7±0.07ms  1272.2 MB/sec
   fsb/zstd                                                         1.00     
13.2±0.08ms  1225.2 MB/sec    1.04     13.6±0.09ms  1181.5 MB/sec
   fsb/zstd_parquet_2                                               1.01     
14.6±0.34ms  1107.4 MB/sec    1.00     14.4±0.13ms  1122.1 MB/sec
   int32_ree/bloom_filter                                           1.00     
34.3±0.08ms    11.9 MB/sec    1.00     34.4±0.08ms    11.8 MB/sec
   int32_ree/cdc                                                    1.00     
37.9±0.10ms    10.7 MB/sec    1.01     38.1±0.13ms    10.7 MB/sec
   int32_ree/default                                                1.00     
33.9±0.06ms    12.0 MB/sec    1.00     34.1±0.07ms    11.9 MB/sec
   int32_ree/number_distinct_values                                 1.01     
51.0±0.22ms     8.0 MB/sec    1.00     50.3±0.13ms     8.1 MB/sec
   int32_ree/parquet_2                                              1.00     
33.9±0.10ms    12.0 MB/sec    1.01     34.1±0.10ms    11.9 MB/sec
   int32_ree/zstd                                                   1.00     
34.4±0.10ms    11.8 MB/sec    1.01     34.7±0.12ms    11.7 MB/sec
   int32_ree/zstd_parquet_2                                         1.00     
34.5±0.12ms    11.8 MB/sec    1.00     34.4±0.08ms    11.8 MB/sec
   int32_ree_95pct_null/bloom_filter                                1.00     
21.1±0.02ms    19.3 MB/sec    1.00     21.1±0.05ms    19.2 MB/sec
   int32_ree_95pct_null/cdc                                         1.01     
23.7±0.09ms    17.2 MB/sec    1.00     23.4±0.06ms    17.4 MB/sec
   int32_ree_95pct_null/default                                     1.00     
21.0±0.02ms    19.3 MB/sec    1.00     21.0±0.02ms    19.4 MB/sec
   int32_ree_95pct_null/number_distinct_values                      1.00     
22.1±0.04ms    18.4 MB/sec    1.00     22.1±0.03ms    18.4 MB/sec
   int32_ree_95pct_null/parquet_2                                   1.00     
21.0±0.03ms    19.3 MB/sec    1.01     21.3±0.02ms    19.1 MB/sec
   int32_ree_95pct_null/zstd                                        1.00     
21.4±0.05ms    19.0 MB/sec    1.00     21.4±0.03ms    19.0 MB/sec
   int32_ree_95pct_null/zstd_parquet_2                              1.01     
21.5±0.05ms    18.9 MB/sec    1.00     21.2±0.03ms    19.2 MB/sec
   large_string_distinct/delta_byte_array                           1.00     
60.6±1.37ms     4.1 GB/sec    1.11     67.4±1.43ms     3.7 GB/sec
   large_string_distinct/plain                                      1.03     
63.2±1.40ms     4.0 GB/sec    1.00     61.5±0.94ms     4.1 GB/sec
   large_string_distinct_nullable/delta_byte_array                  1.00     
60.4±1.62ms     4.1 GB/sec    1.06     64.1±0.87ms     3.9 GB/sec
   large_string_non_null/bloom_filter                               1.00     
49.6±0.25ms     5.0 GB/sec    1.07     53.2±0.27ms     4.7 GB/sec
   large_string_non_null/cdc                                        1.00    
240.6±1.19ms  1063.9 MB/sec    1.00    240.1±1.26ms  1066.4 MB/sec
   large_string_non_null/default                                    1.00     
50.6±0.08ms     4.9 GB/sec    1.02     51.7±0.70ms     4.8 GB/sec
   large_string_non_null/number_distinct_values                     1.01     
67.9±0.17ms     3.7 GB/sec    1.00     67.5±0.13ms     3.7 GB/sec
   large_string_non_null/parquet_2                                  1.00     
50.6±0.07ms     4.9 GB/sec    1.01     50.9±0.11ms     4.9 GB/sec
   large_string_non_null/zstd                                       1.01     
51.3±0.07ms     4.9 GB/sec    1.00     50.8±0.06ms     4.9 GB/sec
   large_string_non_null/zstd_parquet_2                             1.00     
49.8±0.27ms     5.0 GB/sec    1.07     53.2±0.25ms     4.7 GB/sec
   large_string_shared_prefix/delta_byte_array                      1.02     
45.1±1.13ms     5.5 GB/sec    1.00     44.4±0.32ms     5.6 GB/sec
   large_string_shared_prefix/plain                                 1.07    
103.1±4.10ms     2.4 GB/sec    1.00     96.1±0.91ms     2.6 GB/sec
   large_string_shared_prefix_list/delta_byte_array                 1.00     
59.1±4.58ms     4.2 GB/sec    1.00     59.3±0.90ms     4.2 GB/sec
   large_string_shared_prefix_nullable/delta_byte_array             1.02     
40.5±0.07ms     6.2 GB/sec    1.00     39.8±0.08ms     6.3 GB/sec
   large_string_shared_prefix_nullable/plain                        1.00     
68.7±2.61ms     3.6 GB/sec    1.02     70.3±0.95ms     3.6 GB/sec
   large_string_shared_prefix_nullable_dense/delta_byte_array       1.00     
21.9±0.06ms     5.7 GB/sec    1.00     21.9±0.06ms     5.7 GB/sec
   large_string_shared_prefix_nullable_trailing/delta_byte_array    1.00     
40.2±0.19ms     6.2 GB/sec    1.07     42.9±0.41ms     5.8 GB/sec
   list_nested/bloom_filter                                         1.01    
132.4±0.62ms   218.0 MB/sec    1.00    131.5±0.19ms   219.4 MB/sec
   list_nested/cdc                                                  1.00    
150.4±0.22ms   191.9 MB/sec    1.01    151.8±0.39ms   190.1 MB/sec
   list_nested/default                                              1.00    
118.6±0.18ms   243.2 MB/sec    1.17    138.9±0.28ms   207.7 MB/sec
   list_nested/number_distinct_values                               1.00    
273.9±0.91ms   105.3 MB/sec    1.11    302.8±4.91ms    95.3 MB/sec
   list_nested/parquet_2                                            1.00    
128.9±0.20ms   223.9 MB/sec    1.00    129.1±0.17ms   223.6 MB/sec
   list_nested/zstd                                                 1.00    
127.8±0.18ms   225.9 MB/sec    1.01    129.1±0.18ms   223.6 MB/sec
   list_nested/zstd_parquet_2                                       1.00    
142.0±0.25ms   203.2 MB/sec    1.14    162.4±0.28ms   177.7 MB/sec
   list_primitive/bloom_filter                                      1.11   
322.0±25.45ms  1693.9 MB/sec    1.00   290.3±16.12ms  1878.6 MB/sec
   list_primitive/cdc                                               1.02    
301.0±1.81ms  1812.1 MB/sec    1.00    295.5±2.97ms  1845.5 MB/sec
   list_primitive/default                                           1.03    
194.5±3.37ms     2.7 GB/sec    1.00    188.3±1.68ms     2.8 GB/sec
   list_primitive/number_distinct_values                            1.00    
372.3±2.69ms  1464.8 MB/sec    1.06    395.3±4.12ms  1379.5 MB/sec
   list_primitive/parquet_2                                         1.10    
297.5±0.99ms  1832.9 MB/sec    1.00    270.0±0.61ms  2019.7 MB/sec
   list_primitive/zstd                                              1.00    
440.5±1.72ms  1238.2 MB/sec    1.02    451.5±2.17ms  1208.0 MB/sec
   list_primitive/zstd_parquet_2                                    1.00    
425.7±0.53ms  1281.1 MB/sec    1.02    433.0±1.17ms  1259.5 MB/sec
   list_primitive_non_null/bloom_filter                             1.00    
335.2±8.00ms  1623.7 MB/sec    1.17   391.5±20.34ms  1390.3 MB/sec
   list_primitive_non_null/cdc                                      1.01    
382.8±7.16ms  1421.8 MB/sec    1.00    378.3±7.00ms  1438.8 MB/sec
   list_primitive_non_null/default                                  1.31    
267.1±8.63ms  2037.6 MB/sec    1.00    203.7±3.50ms     2.6 GB/sec
   list_primitive_non_null/number_distinct_values                   1.01   
631.6±42.50ms   861.6 MB/sec    1.00   623.6±45.82ms   872.7 MB/sec
   list_primitive_non_null/parquet_2                                1.00    
220.9±5.26ms     2.4 GB/sec    1.08   238.4±15.72ms     2.2 GB/sec
   list_primitive_non_null/zstd                                     1.03    
647.8±5.47ms   840.1 MB/sec    1.00    629.5±2.89ms   864.6 MB/sec
   list_primitive_non_null/zstd_parquet_2                           1.00   
624.8±15.87ms   871.1 MB/sec    1.15    718.2±1.88ms   757.7 MB/sec
   list_primitive_sparse_99pct_null/bloom_filter                    1.00     
12.9±0.10ms     2.8 GB/sec    1.04     13.3±0.08ms     2.7 GB/sec
   list_primitive_sparse_99pct_null/cdc                             1.03     
24.7±0.08ms  1515.2 MB/sec    1.00     24.1±0.11ms  1553.5 MB/sec
   list_primitive_sparse_99pct_null/default                         1.01     
12.5±0.05ms     2.9 GB/sec    1.00     12.3±0.09ms     3.0 GB/sec
   list_primitive_sparse_99pct_null/number_distinct_values          1.00     
12.5±0.08ms     2.9 GB/sec    1.04     13.0±0.05ms     2.8 GB/sec
   list_primitive_sparse_99pct_null/parquet_2                       1.04     
12.9±0.15ms     2.8 GB/sec    1.00     12.4±0.04ms     2.9 GB/sec
   list_primitive_sparse_99pct_null/zstd                            1.02     
14.5±0.18ms     2.5 GB/sec    1.00     14.2±0.08ms     2.6 GB/sec
   list_primitive_sparse_99pct_null/zstd_parquet_2                  1.04     
13.1±0.05ms     2.8 GB/sec    1.00     12.6±0.04ms     2.9 GB/sec
   list_struct_with_list/bloom_filter                               1.00    
257.1±0.51ms   177.3 MB/sec    1.00    256.7±0.57ms   177.7 MB/sec
   list_struct_with_list/cdc                                        1.00    
296.5±0.47ms   153.8 MB/sec    1.01    299.2±0.58ms   152.4 MB/sec
   list_struct_with_list/default                                    1.00    
231.0±0.59ms   197.4 MB/sec    1.01    233.3±0.57ms   195.4 MB/sec
   list_struct_with_list/number_distinct_values                     1.00    
495.6±4.82ms    92.0 MB/sec    1.10   543.7±11.11ms    83.9 MB/sec
   list_struct_with_list/parquet_2                                  1.00    
248.5±1.24ms   183.5 MB/sec    1.00    248.0±0.70ms   183.9 MB/sec
   list_struct_with_list/zstd                                       1.00    
256.5±1.20ms   177.8 MB/sec    1.00    255.2±0.61ms   178.6 MB/sec
   list_struct_with_list/zstd_parquet_2                             1.00    
268.6±0.58ms   169.7 MB/sec    1.00    268.2±0.51ms   170.0 MB/sec
   medium_string_shared_prefix_nullable/delta_byte_array            1.00     
36.0±0.23ms     6.9 GB/sec    1.03     36.9±0.27ms     6.8 GB/sec
   ndv/bool/ndv_on                                                  1.00      
9.8±0.02ms     8.1 MB/sec    1.00      9.8±0.10ms     8.1 MB/sec
   ndv/fsb16_high_cardinality/ndv_on                                1.02     
40.6±0.25ms   246.4 MB/sec    1.00     39.6±0.27ms   252.5 MB/sec
   ndv/fsb16_low_cardinality/ndv_on                                 1.04     
36.8±2.05ms   271.6 MB/sec    1.00     35.5±0.24ms   281.9 MB/sec
   ndv/int32_high_cardinality/ndv_on                                1.01     
28.5±0.07ms    87.7 MB/sec    1.00     28.3±0.24ms    88.5 MB/sec
   ndv/int32_low_cardinality/ndv_on                                 1.00     
16.1±0.06ms   155.0 MB/sec    1.00     16.2±0.05ms   154.7 MB/sec
   ndv/large_binary_high_cardinality/ndv_on                         1.00     
37.6±0.08ms   199.7 MB/sec    1.00     37.6±0.14ms   199.3 MB/sec
   ndv/large_binary_low_cardinality/ndv_on                          1.01     
24.8±0.08ms   604.5 MB/sec    1.00     24.7±0.07ms   608.0 MB/sec
   ndv/utf8_high_cardinality/ndv_on                                 1.04     
67.6±0.55ms     2.3 GB/sec    1.00     65.0±0.48ms     2.4 GB/sec
   ndv/utf8_low_cardinality/ndv_on                                  1.04     
24.9±2.17ms   301.6 MB/sec    1.00     23.9±0.08ms   313.9 MB/sec
   ndv/utf8_view_high_cardinality/ndv_on                            1.05     
38.7±0.10ms   258.1 MB/sec    1.00     36.8±0.22ms   271.6 MB/sec
   ndv/utf8_view_low_cardinality/ndv_on                             1.00     
23.6±0.09ms   423.6 MB/sec    1.00     23.7±0.11ms   422.0 MB/sec
   primitive/bloom_filter                                           1.00    
133.9±1.31ms   335.0 MB/sec    1.03    137.9±2.44ms   325.3 MB/sec
   primitive/cdc                                                    1.01    
146.1±0.54ms   307.1 MB/sec    1.00    144.1±0.69ms   311.5 MB/sec
   primitive/default                                                1.02    
105.9±0.34ms   423.9 MB/sec    1.00    103.9±0.34ms   432.1 MB/sec
   primitive/number_distinct_values                                 1.00    
328.5±2.17ms   136.6 MB/sec    1.04    341.4±1.12ms   131.4 MB/sec
   primitive/parquet_2                                              1.00    
114.7±0.30ms   391.1 MB/sec    1.00    114.5±0.33ms   391.9 MB/sec
   primitive/zstd                                                   1.02    
135.7±0.46ms   330.7 MB/sec    1.00    133.0±0.20ms   337.4 MB/sec
   primitive/zstd_parquet_2                                         1.02    
149.6±0.37ms   299.9 MB/sec    1.00    147.1±0.21ms   305.1 MB/sec
   primitive_all_null/bloom_filter                                  1.05    
935.7±9.78µs    46.8 GB/sec    1.00    888.3±3.62µs    49.3 GB/sec
   primitive_all_null/cdc                                           1.00     
18.9±0.32ms     2.3 GB/sec    1.01     19.0±0.48ms     2.3 GB/sec
   primitive_all_null/default                                       1.00    
268.5±1.64µs   163.2 GB/sec    1.01    270.0±1.71µs   162.3 GB/sec
   primitive_all_null/number_distinct_values                        1.00    
268.3±1.70µs   163.4 GB/sec    1.01    269.8±1.51µs   162.5 GB/sec
   primitive_all_null/parquet_2                                     1.01    
274.8±2.00µs   159.5 GB/sec    1.00    273.0±1.70µs   160.5 GB/sec
   primitive_all_null/zstd                                          1.00    
414.4±1.92µs   105.7 GB/sec    1.00    413.1±2.07µs   106.1 GB/sec
   primitive_all_null/zstd_parquet_2                                1.00    
371.4±2.45µs   118.0 GB/sec    1.00    372.7±1.85µs   117.6 GB/sec
   primitive_non_null/bloom_filter                                  1.00     
88.7±0.46ms   496.1 MB/sec    1.00     88.6±0.40ms   496.9 MB/sec
   primitive_non_null/cdc                                           1.01     
78.6±0.47ms   559.6 MB/sec    1.00     78.1±0.41ms   563.2 MB/sec
   primitive_non_null/default                                       1.01     
55.9±0.13ms   787.0 MB/sec    1.00     55.3±0.13ms   795.5 MB/sec
   primitive_non_null/number_distinct_values                        1.00    
460.3±1.24ms    95.6 MB/sec    1.07    493.9±2.50ms    89.1 MB/sec
   primitive_non_null/parquet_2                                     1.01     
71.9±0.34ms   612.0 MB/sec    1.00     71.3±0.22ms   617.5 MB/sec
   primitive_non_null/zstd                                          1.00     
87.0±0.18ms   506.0 MB/sec    1.02     89.0±0.33ms   494.5 MB/sec
   primitive_non_null/zstd_parquet_2                                1.00    
104.6±0.29ms   420.5 MB/sec    1.02    106.9±0.29ms   411.7 MB/sec
   primitive_sparse_99pct_null/bloom_filter                         1.14     
13.4±0.15ms     3.3 GB/sec    1.00     11.8±0.07ms     3.7 GB/sec
   primitive_sparse_99pct_null/cdc                                  1.00     
29.9±0.23ms  1501.8 MB/sec    1.03     30.7±0.35ms  1459.7 MB/sec
   primitive_sparse_99pct_null/default                              1.00     
10.6±0.06ms     4.1 GB/sec    1.05     11.1±0.07ms     3.9 GB/sec
   primitive_sparse_99pct_null/number_distinct_values               1.09     
15.1±0.07ms     2.9 GB/sec    1.00     13.8±0.10ms     3.2 GB/sec
   primitive_sparse_99pct_null/parquet_2                            1.00     
10.5±0.05ms     4.2 GB/sec    1.06     11.2±0.04ms     3.9 GB/sec
   primitive_sparse_99pct_null/zstd                                 1.02     
14.1±0.08ms     3.1 GB/sec    1.00     13.9±0.60ms     3.2 GB/sec
   primitive_sparse_99pct_null/zstd_parquet_2                       1.00     
12.5±0.09ms     3.5 GB/sec    1.05     13.1±0.08ms     3.3 GB/sec
   short_string_non_null/bloom_filter                               1.00     
26.5±0.16ms   453.3 MB/sec    1.02     27.1±0.09ms   443.5 MB/sec
   short_string_non_null/cdc                                        1.00     
19.4±0.06ms   619.2 MB/sec    1.01     19.6±0.07ms   613.2 MB/sec
   short_string_non_null/default                                    1.02     
15.6±0.05ms   771.6 MB/sec    1.00     15.2±0.04ms   790.2 MB/sec
   short_string_non_null/number_distinct_values                     1.04     
72.1±1.16ms   166.4 MB/sec    1.00     69.1±0.43ms   173.8 MB/sec
   short_string_non_null/parquet_2                                  1.01     
24.7±0.10ms   485.5 MB/sec    1.00     24.5±0.13ms   490.1 MB/sec
   short_string_non_null/zstd                                       1.00     
35.4±0.11ms   339.1 MB/sec    1.01     35.8±0.11ms   335.6 MB/sec
   short_string_non_null/zstd_parquet_2                             1.02     
27.7±0.12ms   433.1 MB/sec    1.00     27.3±0.04ms   439.9 MB/sec
   small_string_distinct/delta_byte_array                           1.00   
962.7±12.74µs     8.1 GB/sec    1.06  1024.0±18.27µs     7.7 GB/sec
   small_string_distinct/plain                                      1.00    
740.3±4.45µs    10.6 GB/sec    1.10    814.4±6.55µs     9.6 GB/sec
   small_string_partial_prefix/delta_byte_array                     1.00    
989.4±5.13µs     7.9 GB/sec    1.15  1133.5±19.08µs     6.9 GB/sec
   small_string_partial_prefix/plain                                1.00    
988.3±9.72µs     7.9 GB/sec    1.18  1163.9±27.77µs     6.7 GB/sec
   small_string_shared_prefix/delta_byte_array                      1.00    
981.2±2.43µs     8.0 GB/sec    1.01   988.2±10.63µs     7.9 GB/sec
   small_string_shared_prefix/plain                                 1.00   
1043.3±6.74µs     7.5 GB/sec    1.00   1039.5±7.97µs     7.5 GB/sec
   string/bloom_filter                                              1.03   
215.3±24.18ms     2.4 GB/sec    1.00   210.0±21.63ms     2.4 GB/sec
   string/cdc                                                       1.03    
210.3±6.25ms     2.4 GB/sec    1.00    204.5±4.14ms     2.5 GB/sec
   string/default                                                   1.08   
135.6±24.75ms     3.8 GB/sec    1.00   125.9±19.58ms     4.1 GB/sec
   string/number_distinct_values                                    1.06    
225.6±5.70ms     2.3 GB/sec    1.00    212.1±2.02ms     2.4 GB/sec
   string/parquet_2                                                 1.02    
167.9±0.54ms     3.0 GB/sec    1.00    164.0±1.15ms     3.1 GB/sec
   string/zstd                                                      1.00   
475.3±17.59ms  1103.0 MB/sec    1.01   478.6±13.62ms  1095.3 MB/sec
   string/zstd_parquet_2                                            1.00    
386.5±8.65ms  1356.3 MB/sec    1.07   415.1±32.39ms  1263.1 MB/sec
   string_and_binary_view/bloom_filter                              1.00     
62.0±0.20ms   520.4 MB/sec    1.05     65.2±0.51ms   494.5 MB/sec
   string_and_binary_view/cdc                                       1.00     
59.2±0.21ms   544.9 MB/sec    1.04     61.7±0.48ms   523.0 MB/sec
   string_and_binary_view/default                                   1.00     
48.2±0.17ms   668.6 MB/sec    1.04     50.0±0.34ms   644.9 MB/sec
   string_and_binary_view/number_distinct_values                    1.01    
112.1±0.29ms   287.6 MB/sec    1.00    110.5±1.87ms   291.8 MB/sec
   string_and_binary_view/parquet_2                                 1.02     
59.6±0.78ms   540.7 MB/sec    1.00     58.2±0.20ms   554.1 MB/sec
   string_and_binary_view/zstd                                      1.01     
86.3±0.22ms   373.6 MB/sec    1.00     85.2±0.16ms   378.5 MB/sec
   string_and_binary_view/zstd_parquet_2                            1.04     
75.1±0.93ms   429.4 MB/sec    1.00     72.1±0.19ms   447.0 MB/sec
   string_dictionary/bloom_filter                                   1.00    
115.9±0.81ms     2.2 GB/sec    1.11    129.1±2.12ms  2046.3 MB/sec
   string_dictionary/cdc                                            1.00     
80.8±0.78ms     3.2 GB/sec    1.08     87.5±4.25ms     2.9 GB/sec
   string_dictionary/default                                        1.05     
91.4±0.40ms     2.8 GB/sec    1.00     87.0±0.70ms     3.0 GB/sec
   string_dictionary/number_distinct_values                         1.03    
102.0±1.80ms     2.5 GB/sec    1.00     99.0±0.49ms     2.6 GB/sec
   string_dictionary/parquet_2                                      1.04     
49.2±0.39ms     5.2 GB/sec    1.00     47.1±0.15ms     5.5 GB/sec
   string_dictionary/zstd                                           1.00    
230.1±3.83ms  1148.1 MB/sec    1.06    243.0±4.75ms  1087.1 MB/sec
   string_dictionary/zstd_parquet_2                                 1.01    
228.4±0.35ms  1156.6 MB/sec    1.00    225.5±0.29ms  1171.2 MB/sec
   string_dictionary_low_cardinality_100/bloom_filter               1.00     
21.6±0.07ms   185.5 MB/sec    1.00     21.6±0.05ms   185.7 MB/sec
   string_dictionary_low_cardinality_100/cdc                        1.00     
23.6±0.05ms   169.4 MB/sec    1.01     23.9±0.05ms   167.7 MB/sec
   string_dictionary_low_cardinality_100/default                    1.00     
21.5±0.05ms   186.4 MB/sec    1.00     21.5±0.05ms   186.5 MB/sec
   string_dictionary_low_cardinality_100/number_distinct_values     1.00     
44.7±0.09ms    89.7 MB/sec    1.00     44.7±0.09ms    89.5 MB/sec
   string_dictionary_low_cardinality_100/parquet_2                  1.00     
21.3±0.05ms   187.9 MB/sec    1.01     21.6±0.08ms   185.5 MB/sec
   string_dictionary_low_cardinality_100/zstd                       1.00     
21.8±0.08ms   183.5 MB/sec    1.01     22.0±0.04ms   182.0 MB/sec
   string_dictionary_low_cardinality_100/zstd_parquet_2             1.00     
21.8±0.08ms   183.8 MB/sec    1.01     22.0±0.04ms   182.1 MB/sec
   string_dictionary_low_cardinality_20/bloom_filter                1.00     
21.2±0.07ms   188.7 MB/sec    1.02     21.7±0.06ms   184.5 MB/sec
   string_dictionary_low_cardinality_20/cdc                         1.00     
23.6±0.10ms   170.0 MB/sec    1.01     23.9±0.06ms   167.5 MB/sec
   string_dictionary_low_cardinality_20/default                     1.00     
21.2±0.07ms   189.3 MB/sec    1.02     21.6±0.05ms   185.3 MB/sec
   string_dictionary_low_cardinality_20/number_distinct_values      1.00     
44.5±0.07ms    90.1 MB/sec    1.00     44.4±0.07ms    90.1 MB/sec
   string_dictionary_low_cardinality_20/parquet_2                   1.00     
21.2±0.06ms   188.7 MB/sec    1.01     21.5±0.08ms   186.4 MB/sec
   string_dictionary_low_cardinality_20/zstd                        1.00     
21.4±0.08ms   187.3 MB/sec    1.01     21.6±0.07ms   185.1 MB/sec
   string_dictionary_low_cardinality_20/zstd_parquet_2              1.00     
21.3±0.06ms   187.8 MB/sec    1.01     21.6±0.07ms   185.2 MB/sec
   string_dictionary_low_cardinality_400/bloom_filter               1.00     
22.0±0.17ms   182.3 MB/sec    1.00     22.0±0.08ms   182.6 MB/sec
   string_dictionary_low_cardinality_400/cdc                        1.00     
24.2±0.06ms   165.7 MB/sec    1.00     24.3±0.09ms   165.2 MB/sec
   string_dictionary_low_cardinality_400/default                    1.01     
22.1±0.12ms   181.2 MB/sec    1.00     21.9±0.05ms   183.3 MB/sec
   string_dictionary_low_cardinality_400/number_distinct_values     1.00     
44.8±0.13ms    89.5 MB/sec    1.00     44.8±0.70ms    89.5 MB/sec
   string_dictionary_low_cardinality_400/parquet_2                  1.00     
21.9±0.14ms   183.0 MB/sec    1.01     22.2±0.10ms   180.7 MB/sec
   string_dictionary_low_cardinality_400/zstd                       1.01     
22.5±0.19ms   178.2 MB/sec    1.00     22.4±0.08ms   179.1 MB/sec
   string_dictionary_low_cardinality_400/zstd_parquet_2             1.00     
22.5±0.18ms   178.6 MB/sec    1.00     22.4±0.11ms   178.8 MB/sec
   string_non_null/bloom_filter                                     1.00   
216.8±14.42ms     2.4 GB/sec    1.21   263.2±16.01ms  1991.2 MB/sec
   string_non_null/cdc                                              1.00   
254.1±13.36ms     2.0 GB/sec    1.01   256.2±10.79ms  2044.9 MB/sec
   string_non_null/default                                          1.00   
119.0±12.24ms     4.3 GB/sec    1.01   120.0±10.19ms     4.3 GB/sec
   string_non_null/number_distinct_values                           1.05    
295.7±8.00ms  1771.8 MB/sec    1.00   282.3±13.24ms  1856.0 MB/sec
   string_non_null/parquet_2                                        1.13    
116.1±6.91ms     4.4 GB/sec    1.00    102.8±0.22ms     5.0 GB/sec
   string_non_null/zstd                                             1.00    
556.2±5.98ms   942.1 MB/sec    1.00    557.7±4.38ms   939.6 MB/sec
   string_non_null/zstd_parquet_2                                   1.00    
490.4±6.30ms  1068.4 MB/sec    1.01    495.3±5.02ms  1057.8 MB/sec
   string_ree/bloom_filter                                          1.07   
186.6±11.01ms    87.9 MB/sec    1.00    173.8±7.76ms    94.4 MB/sec
   string_ree/cdc                                                   1.00    
179.1±1.62ms    91.6 MB/sec    1.24    221.8±0.65ms    74.0 MB/sec
   string_ree/default                                               1.00   
110.8±23.12ms   148.1 MB/sec    1.11    123.5±0.83ms   132.9 MB/sec
   string_ree/number_distinct_values                                1.52    
171.3±1.39ms    95.8 MB/sec    1.00    113.0±1.40ms   145.2 MB/sec
   string_ree/parquet_2                                             1.00     
79.7±0.51ms   205.7 MB/sec    1.56    124.2±0.36ms   132.2 MB/sec
   string_ree/zstd                                                  1.00    
180.1±0.67ms    91.1 MB/sec    1.05    189.5±1.12ms    86.6 MB/sec
   string_ree/zstd_parquet_2                                        1.03    
139.2±0.46ms   117.9 MB/sec    1.00    135.2±0.55ms   121.4 MB/sec
   string_ree_95pct_null/bloom_filter                               1.00     
24.5±0.11ms    57.5 MB/sec    1.02     24.9±0.05ms    56.4 MB/sec
   string_ree_95pct_null/cdc                                        1.03     
32.6±0.24ms    43.2 MB/sec    1.00     31.7±0.08ms    44.4 MB/sec
   string_ree_95pct_null/default                                    1.00     
24.2±0.12ms    58.2 MB/sec    1.03     25.0±0.06ms    56.3 MB/sec
   string_ree_95pct_null/number_distinct_values                     1.03     
27.1±0.22ms    52.0 MB/sec    1.00     26.4±0.09ms    53.4 MB/sec
   string_ree_95pct_null/parquet_2                                  1.00     
24.3±0.06ms    57.9 MB/sec    1.03     25.0±0.06ms    56.3 MB/sec
   string_ree_95pct_null/zstd                                       1.00     
25.1±0.11ms    56.1 MB/sec    1.01     25.4±0.06ms    55.4 MB/sec
   string_ree_95pct_null/zstd_parquet_2                             1.00     
24.9±0.06ms    56.4 MB/sec    1.00     24.9±0.11ms    56.5 MB/sec
   struct_all_null/bloom_filter                                     1.00    
381.0±2.60µs    41.3 GB/sec    1.00    380.5±1.36µs    41.4 GB/sec
   struct_all_null/cdc                                              1.00      
7.8±0.08ms     2.0 GB/sec    1.00      7.8±0.09ms     2.0 GB/sec
   struct_all_null/default                                          1.01    
115.9±0.75µs   135.8 GB/sec    1.00    114.6±0.69µs   137.4 GB/sec
   struct_all_null/number_distinct_values                           1.00    
115.0±0.75µs   137.0 GB/sec    1.01    115.8±0.66µs   136.0 GB/sec
   struct_all_null/parquet_2                                        1.00    
117.9±0.79µs   133.6 GB/sec    1.00    117.4±0.72µs   134.2 GB/sec
   struct_all_null/zstd                                             1.00    
178.2±0.91µs    88.4 GB/sec    1.00    177.5±1.09µs    88.7 GB/sec
   struct_all_null/zstd_parquet_2                                   1.01    
159.0±0.78µs    99.0 GB/sec    1.00    158.1±0.74µs    99.6 GB/sec
   struct_non_null/bloom_filter                                     1.00     
37.7±0.12ms   424.4 MB/sec    1.05     39.5±0.11ms   404.6 MB/sec
   struct_non_null/cdc                                              1.01     
40.5±0.16ms   395.1 MB/sec    1.00     40.0±0.14ms   399.8 MB/sec
   struct_non_null/default                                          1.00     
26.4±0.11ms   606.8 MB/sec    1.04     27.4±0.39ms   584.2 MB/sec
   struct_non_null/number_distinct_values                           1.01    
194.1±3.38ms    82.4 MB/sec    1.00    191.7±0.80ms    83.5 MB/sec
   struct_non_null/parquet_2                                        1.00     
33.2±0.57ms   482.1 MB/sec    1.02     33.7±0.10ms   474.3 MB/sec
   struct_non_null/zstd                                             1.01     
35.1±0.09ms   456.2 MB/sec    1.00     34.7±0.07ms   461.4 MB/sec
   struct_non_null/zstd_parquet_2                                   1.01     
47.1±0.18ms   339.8 MB/sec    1.00     46.7±0.07ms   342.9 MB/sec
   struct_sparse_99pct_null/bloom_filter                            1.09      
7.0±0.36ms     2.2 GB/sec    1.00      6.5±0.05ms     2.4 GB/sec
   struct_sparse_99pct_null/cdc                                     1.00     
13.4±0.13ms  1203.9 MB/sec    1.00     13.4±0.12ms  1205.7 MB/sec
   struct_sparse_99pct_null/default                                 1.05      
6.3±0.09ms     2.5 GB/sec    1.00      6.0±0.04ms     2.6 GB/sec
   struct_sparse_99pct_null/number_distinct_values                  1.00      
7.2±0.01ms     2.2 GB/sec    1.00      7.2±0.03ms     2.2 GB/sec
   struct_sparse_99pct_null/parquet_2                               1.01      
5.9±0.02ms     2.7 GB/sec    1.00      5.9±0.02ms     2.7 GB/sec
   struct_sparse_99pct_null/zstd                                    1.01      
7.3±0.05ms     2.1 GB/sec    1.00      7.3±0.02ms     2.2 GB/sec
   struct_sparse_99pct_null/zstd_parquet_2                          1.06      
7.1±0.09ms     2.2 GB/sec    1.00      6.7±0.03ms     2.4 GB/sec
   
   ```
   
   </details>
   
   <details><summary>Per-runner information</summary>
   
   <details><summary>arrow&#95;writer — shard 1/4</summary>
   
   **Node:** gk3-benchmark-cluster-nap-1p8mzl3a-8368b426-pf2p
   
   **Instance:** c4a-highmem-16 (12 vCPU / 65 GiB)
   
   **uname:**
   
   ```text
   Linux bench-c6066957853-3191-22rgn 6.12.94+ #1 SMP Fri Aug 21 08:00:16 UTC 
2026 aarch64 GNU/Linux
   ```
   
   **BENCH_COMMAND:**
   
   ```sh
   cargo bench --features=arrow,async,test_common,experimental,object_store 
--bench arrow_writer
   ```
   
   <details><summary>CPU Details (lscpu)</summary>
   
   ```text
   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>
   
   <details><summary>Resource Usage</summary>
   
   **base (merge-base)**
   | Metric | Value |
   |--------|-------|
   | Wall time | 815.2s |
   | Peak memory | 2.9 GiB |
   | Avg memory | 2.5 GiB |
   | CPU user | 770.7s |
   | CPU sys | 38.3s |
   | Peak spill | 0 B |
   
   **branch**
   | Metric | Value |
   |--------|-------|
   | Wall time | 795.2s |
   | Peak memory | 2.9 GiB |
   | Avg memory | 2.6 GiB |
   | CPU user | 767.0s |
   | CPU sys | 22.0s |
   | Peak spill | 0 B |
   
   
   </details>
   
   </details>
   
   <details><summary>arrow&#95;writer — shard 2/4</summary>
   
   **Node:** gk3-benchmark-cluster-nap-1p8mzl3a-9d648e56-7ghd
   
   **Instance:** c4a-highmem-16 (12 vCPU / 65 GiB)
   
   **uname:**
   
   ```text
   Linux bench-c6066957853-3192-psg7d 6.12.94+ #1 SMP Fri Aug 21 08:00:16 UTC 
2026 aarch64 GNU/Linux
   ```
   
   **BENCH_COMMAND:**
   
   ```sh
   cargo bench --features=arrow,async,test_common,experimental,object_store 
--bench arrow_writer
   ```
   
   <details><summary>CPU Details (lscpu)</summary>
   
   ```text
   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>
   
   <details><summary>Resource Usage</summary>
   
   **base (merge-base)**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1125.2s |
   | Peak memory | 2.9 GiB |
   | Avg memory | 2.6 GiB |
   | CPU user | 1095.7s |
   | CPU sys | 23.7s |
   | Peak spill | 0 B |
   
   **branch**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1125.2s |
   | Peak memory | 3.0 GiB |
   | Avg memory | 2.7 GiB |
   | CPU user | 1084.7s |
   | CPU sys | 38.6s |
   | Peak spill | 0 B |
   
   
   </details>
   
   </details>
   
   <details><summary>arrow&#95;writer — shard 3/4</summary>
   
   **Node:** gk3-benchmark-cluster-nap-1p8mzl3a-abf1a855-8nhr
   
   **Instance:** c4a-highmem-16 (12 vCPU / 65 GiB)
   
   **uname:**
   
   ```text
   Linux bench-c6066957853-3193-fhdlp 6.12.94+ #1 SMP Fri Aug 21 08:00:16 UTC 
2026 aarch64 GNU/Linux
   ```
   
   **BENCH_COMMAND:**
   
   ```sh
   cargo bench --features=arrow,async,test_common,experimental,object_store 
--bench arrow_writer
   ```
   
   <details><summary>CPU Details (lscpu)</summary>
   
   ```text
   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>
   
   <details><summary>Resource Usage</summary>
   
   **base (merge-base)**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1200.3s |
   | Peak memory | 3.0 GiB |
   | Avg memory | 2.6 GiB |
   | CPU user | 1158.6s |
   | CPU sys | 37.8s |
   | Peak spill | 0 B |
   
   **branch**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1225.3s |
   | Peak memory | 3.0 GiB |
   | Avg memory | 2.5 GiB |
   | CPU user | 1179.5s |
   | CPU sys | 41.9s |
   | Peak spill | 0 B |
   
   
   </details>
   
   </details>
   
   <details><summary>arrow&#95;writer — shard 4/4</summary>
   
   **Node:** gk3-benchmark-cluster-nap-1p8mzl3a-9d648e56-jrsl
   
   **Instance:** c4a-highmem-16 (12 vCPU / 65 GiB)
   
   **uname:**
   
   ```text
   Linux bench-c6066957853-3194-dhvqh 6.12.94+ #1 SMP Fri Aug 21 08:00:16 UTC 
2026 aarch64 GNU/Linux
   ```
   
   **BENCH_COMMAND:**
   
   ```sh
   cargo bench --features=arrow,async,test_common,experimental,object_store 
--bench arrow_writer
   ```
   
   <details><summary>CPU Details (lscpu)</summary>
   
   ```text
   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>
   
   <details><summary>Resource Usage</summary>
   
   **base (merge-base)**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1015.2s |
   | Peak memory | 2.9 GiB |
   | Avg memory | 2.3 GiB |
   | CPU user | 931.0s |
   | CPU sys | 78.2s |
   | Peak spill | 0 B |
   
   **branch**
   | Metric | Value |
   |--------|-------|
   | Wall time | 1010.2s |
   | Peak memory | 2.8 GiB |
   | Avg memory | 2.3 GiB |
   | CPU user | 917.6s |
   | CPU sys | 87.6s |
   | Peak spill | 0 B |
   
   
   </details>
   
   </details>
   
   </details>
   
   ---
   [File an issue](https://github.com/adriangb/datafusion-benchmarking/issues) 
against this benchmark runner
   
   <!-- benchmark-request:6066957853:finish:1efb7c8ccb668f851f0e0e3fa6b59b02 -->


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