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perf(fake-tcp) faster checksum calculation

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Before:
```
test packet::benchmarks::bench_build_tcp_packet_128  ... bench:         207 ns/iter (+/- 25)
test packet::benchmarks::bench_build_tcp_packet_1460 ... bench:         670 ns/iter (+/- 14)
test packet::benchmarks::bench_build_tcp_packet_512  ... bench:         334 ns/iter (+/- 21)
```

After:
```
test packet::benchmarks::bench_build_tcp_packet_128  ... bench:         206 ns/iter (+/- 9)
test packet::benchmarks::bench_build_tcp_packet_1460 ... bench:         259 ns/iter (+/- 16)
test packet::benchmarks::bench_build_tcp_packet_512  ... bench:         212 ns/iter (+/- 11)
```
This commit is contained in:
Datong Sun
2021-09-20 08:03:39 -07:00
parent 212f9b6f9d
commit 04b0e97c1d
3 changed files with 78 additions and 4 deletions
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5
fake-tcp/Cargo.toml
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@@ -10,6 +10,10 @@ description = """
A TUN interface based, user space, asynchronous and high performance TCP stack that allows
packet oriented tunneling with minimum overhead.
"""
[features]
benchmark = []
[dependencies]
bytes = "1"
pnet = "0.28.0"
@@ -17,3 +21,4 @@ tokio-tun = "0.3.15"
tokio = { version = "1.11.0", features = ["full"] }
rand = { version = "0.8.4", features = ["small_rng"] }
log = "0.4"
internet-checksum = "0.2.0"