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//! Benchmarks for core operations.
//!
//! Run with: cargo bench
use std::net::SocketAddr;
use tesseras_dht::crypto::Identity;
use tesseras_dht::id::NodeId;
use tesseras_dht::peers::PeerInfo;
use tesseras_dht::routing::RoutingTable;
use tesseras_dht::wire::MsgHeader;
fn main() {
println!("=== tesseras-dht benchmarks ===\n");
bench_sha256();
bench_ed25519_sign();
bench_ed25519_verify();
bench_routing_add();
bench_routing_closest();
bench_header_roundtrip();
bench_node_id_xor();
}
fn bench_sha256() {
let data = vec![0xABu8; 1024];
let start = std::time::Instant::now();
let iters = 100_000;
for _ in 0..iters {
let _ = NodeId::from_key(&data);
}
let elapsed = start.elapsed();
println!(
"SHA-256 (1KB): {:>8.0} ns/op ({iters} iters)",
elapsed.as_nanos() as f64 / iters as f64
);
}
fn bench_ed25519_sign() {
let id = Identity::generate();
let data = vec![0x42u8; 256];
let start = std::time::Instant::now();
let iters = 10_000;
for _ in 0..iters {
let _ = id.sign(&data);
}
let elapsed = start.elapsed();
println!(
"Ed25519 sign: {:>8.0} ns/op ({iters} iters)",
elapsed.as_nanos() as f64 / iters as f64
);
}
fn bench_ed25519_verify() {
let id = Identity::generate();
let data = vec![0x42u8; 256];
let sig = id.sign(&data);
let start = std::time::Instant::now();
let iters = 10_000;
for _ in 0..iters {
let _ = Identity::verify(id.public_key(), &data, &sig);
}
let elapsed = start.elapsed();
println!(
"Ed25519 verify: {:>8.0} ns/op ({iters} iters)",
elapsed.as_nanos() as f64 / iters as f64
);
}
fn bench_routing_add() {
let local = NodeId::random();
let mut rt = RoutingTable::new(local);
let start = std::time::Instant::now();
let iters = 10_000;
for i in 0..iters {
let id = NodeId::random();
let addr = SocketAddr::from(([10, 0, (i % 256) as u8, 1], 3000));
rt.add(PeerInfo::new(id, addr));
}
let elapsed = start.elapsed();
println!(
"Routing add: {:>8.0} ns/op ({iters} iters, size={})",
elapsed.as_nanos() as f64 / iters as f64,
rt.size()
);
}
fn bench_routing_closest() {
let local = NodeId::random();
let mut rt = RoutingTable::new(local);
for i in 0..500 {
let id = NodeId::random();
let addr = SocketAddr::from(([10, 0, (i % 256) as u8, 1], 3000));
rt.add(PeerInfo::new(id, addr));
}
let target = NodeId::random();
let start = std::time::Instant::now();
let iters = 10_000;
for _ in 0..iters {
let _ = rt.closest(&target, 10);
}
let elapsed = start.elapsed();
println!(
"Routing closest: {:>8.0} ns/op ({iters} iters, size={})",
elapsed.as_nanos() as f64 / iters as f64,
rt.size()
);
}
fn bench_header_roundtrip() {
let hdr = MsgHeader::new(
tesseras_dht::wire::MsgType::DhtPing,
100,
NodeId::random(),
NodeId::random(),
);
let mut buf = vec![0u8; tesseras_dht::wire::HEADER_SIZE];
let start = std::time::Instant::now();
let iters = 1_000_000;
for _ in 0..iters {
hdr.write(&mut buf).unwrap();
let _ = MsgHeader::parse(&buf).unwrap();
}
let elapsed = start.elapsed();
println!(
"Header roundtrip: {:>8.0} ns/op ({iters} iters)",
elapsed.as_nanos() as f64 / iters as f64
);
}
fn bench_node_id_xor() {
let a = NodeId::random();
let b = NodeId::random();
let start = std::time::Instant::now();
let iters = 10_000_000;
for _ in 0..iters {
let _ = a.distance(&b);
}
let elapsed = start.elapsed();
println!(
"NodeId XOR: {:>8.0} ns/op ({iters} iters)",
elapsed.as_nanos() as f64 / iters as f64
);
}
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