Add benchmark for KV

spdlog/Cargo.toml

@@ -112,6 +112,9 @@ name = "spdlog_rs_pattern"
 path = "benches/spdlog-rs/pattern.rs"
 required-features = ["runtime-pattern", "serde_json"]
 [[bench]]
+name = "spdlog_rs_kv"
+path = "benches/spdlog-rs/kv.rs"
+[[bench]]
 name = "fast_log"
 path = "benches/fast_log/main.rs"
 harness = false

spdlog/benches/spdlog-rs/kv.rs

@@ -0,0 +1,56 @@
+#![feature(test)]
+
+extern crate test;
+
+#[path = "../common/mod.rs"]
+mod common;
+
+use std::sync::Arc;
+
+use spdlog::{prelude::*, sink::*};
+use test::Bencher;
+
+include!(concat!(
+    env!("OUT_DIR"),
+    "/test_utils/common_for_integration_test.rs"
+));
+use test_utils::*;
+
+fn logger(name: &str) -> Logger {
+    let path = common::BENCH_LOGS_PATH.join(format!("kv_{name}.log"));
+    let sink = Arc::new(
+        FileSink::builder()
+            .path(path)
+            .truncate(true)
+            .build()
+            .unwrap(),
+    );
+    build_test_logger(|b| b.sink(sink))
+}
+
+#[bench]
+fn bench_kv_str(bencher: &mut Bencher) {
+    let logger = logger("str");
+    bencher.iter(
+        || info!(logger: logger, bench_log_message!(), kv: { k1 = "v1", k2 = "v2", k3 = "v3" }),
+    )
+}
+
+#[bench]
+fn bench_kv_mixed(bencher: &mut Bencher) {
+    let logger = logger("mixed");
+    let v = vec![1];
+    bencher.iter(|| info!(logger: logger, bench_log_message!(), kv: { k1 = 1, k2: = 1.0, v:? }))
+}
+
+#[bench]
+fn bench_kv_many(bencher: &mut Bencher) {
+    let logger = logger("12_kv");
+    bencher.iter(|| {
+        info!(logger: logger, bench_log_message!(), kv: {
+            k1 = "v1", k2 = "v2", k3 = "v3", k4 = "v4",
+            k5 = "v5", k6 = "v6", k7 = "v7", k8 = "v8",
+            k9 = "v9", k10 = "v10", k11 = "v11", k12 = "v12",
+        })
+    })
+}