MingyuZhong opened a new pull request #7945:
URL: https://github.com/apache/arrow/pull/7945
Added a benchmark to decimal_benchmark.
```
Running release/arrow-decimal-benchmark
Run on (12 X 4500 MHz CPU s)
CPU Caches:
L1 Data 32 KiB (x6)
L1 Instruction 32 KiB (x6)
L2 Unified 1024 KiB (x6)
L3 Unified 8448 KiB (x1)
Load Average: 0.23, 0.22, 0.23
----------------------------------------------------------------------------------
Benchmark Time CPU Iterations
UserCounters...
----------------------------------------------------------------------------------
ToString (before) 2205 ns 2205 ns 321603
items_per_second=2.72094M/s
ToString (after) 280 ns 280 ns 2486507
items_per_second=21.4211M/s
```
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