balancer: add message latency benchmarks (#1173)

* balancer: add message latency benchmarks

* refactor how balancer context is initialized

Author: dyc3

Cargo.lock

@@ -8,6 +8,7 @@ async-trait = "0.1.68"
 bytes = "1.4.0"
 clap = { version = "4.3.12", features = ["derive"] }
 console-subscriber = "0.1.8"
+criterion = { version = "0.5.1", features = ["async_tokio"] }
 figment = { version = "0.10.10", features = ["toml", "env"] }
 futures-util = "0.3.28"
 harness = { path = "crates/harness" }

Cargo.toml

@@ -35,3 +35,10 @@ once_cell.workspace = true
 pin-project.workspace = true
 prometheus.workspace = true
 trust-dns-resolver = { version = "0.22.0", features = ["system-config"] }
+
+[dev-dependencies]
+criterion.workspace = true
+
+[[bench]]
+name = "throughput"
+harness = false