docs: add benchmark result in README

Author: LongYinan

packages/crc32/README.md

@@ -4,6 +4,41 @@
 
 Fastest `crc32` implement in `NodeJS`
 
+The 4 tested implementations are:
+
+- **@node-rs/crc32** Hardware accelerated CRC-32C from [crc32fast](https://crates.io/crates/crc32fast)
+- **sse4_crc32c** Hardware accelerated CRC-32C from [sse4_crc32](https://github.com/Voxer/sse4_crc32)
+- **js_crc32c** Javascript implemented CRC-32C
+- **js_crc32** Javascript implemented CRC-32 from [buffer-crc32](https://github.com/brianloveswords/buffer-crc32)
+
+# Performance
+
+```bash
+sse4_crc32c_node_rs for inputs 1024B x 5,108,123 ops/sec ±1.86% (89 runs sampled)
+sse4_crc32c_node_rs for inputs 16931844B, avg 2066B x 271 ops/sec ±1.15% (85 runs sampled)
+sse4_crc32c_hw for inputs 1024B x 3,543,443 ops/sec ±1.39% (93 runs sampled)
+sse4_crc32c_hw for inputs 16931844B, avg 2066B x 209 ops/sec ±0.78% (76 runs sampled)
+sse4_crc32c_sw for inputs 1024B x 1,460,284 ops/sec ±2.35% (90 runs sampled)
+sse4_crc32c_sw for inputs 16931844B, avg 2066B x 93.50 ops/sec ±2.43% (69 runs sampled)
+js_crc32c for inputs 1024B x 464,681 ops/sec ±0.46% (91 runs sampled)
+js_crc32c for inputs 16931844B, avg 2066B x 28.25 ops/sec ±1.64% (51 runs sampled)
+js_crc32 for inputs 1024B x 442,272 ops/sec ±2.66% (93 runs sampled)
+js_crc32 for inputs 16931844B, avg 2066B x 22.12 ops/sec ±5.20% (40 runs sampled)
++---------------------+-------------------+----------------------+
+|                     │ 1024B             │ 16931844B, avg 2066B |
++---------------------+-------------------+----------------------+
+| sse4_crc32c_node_rs │ 5,108,123 ops/sec │ 271 ops/sec          |
++---------------------+-------------------+----------------------+
+| sse4_crc32c_hw      │ 3,543,443 ops/sec │ 209 ops/sec          |
++---------------------+-------------------+----------------------+
+| sse4_crc32c_sw      │ 1,460,284 ops/sec │ 93.50 ops/sec        |
++---------------------+-------------------+----------------------+
+| js_crc32c           │ 464,681 ops/sec   │ 28.25 ops/sec        |
++---------------------+-------------------+----------------------+
+| js_crc32            │ 442,272 ops/sec   │ 22.12 ops/sec        |
++---------------------+-------------------+----------------------+
+```
+
 # Support matrix
 
 |                   | node 10 | node12 | node13 | node14 |