diff --git a/Cargo.toml b/Cargo.toml
index e72c60d4..28562bcc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -70,6 +70,12 @@ path = "rust/benches/normal/io_bench.rs"
 harness = false
 required-features = ["native"]
 
+[[bench]]
+name = "function_call_bench"
+path = "rust/benches/normal/function_call_bench.rs"
+harness = false
+required-features = ["native"]
+
 # Optimize Benches
 [[bench]]
 name = "add_bench_optimize"
@@ -101,6 +107,12 @@ path = "rust/benches/optimize/io_bench.rs"
 harness = false
 required-features = ["native"]
 
+[[bench]]
+name = "function_call_bench_optimize"
+path = "rust/benches/optimize/function_call_bench.rs"
+harness = false
+required-features = ["native"]
+
 [dependencies]
 napi = { version = "3.9", features = ["napi4", "serde", "serde-json"], optional = true } 
 napi-derive = { version = "3.5", optional = true }
diff --git a/rust/benches/normal/function_call_bench.rs b/rust/benches/normal/function_call_bench.rs
new file mode 100644
index 00000000..dc1e50a4
--- /dev/null
+++ b/rust/benches/normal/function_call_bench.rs
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+use lightvm::{
+  LightVM,
+  types::{
+    capability::Capability, runtime_config::RuntimeConfig, vmconfig::VmConfig,
+  },
+};
+
+fn config() -> VmConfig {
+  VmConfig {
+    caps: vec![Capability::Control, Capability::Debug, Capability::Observe],
+    runtime_config: Some(RuntimeConfig { nightly: true }),
+    ..Default::default()
+  }
+}
+
+fn main() {
+  let mut vm = LightVM::new(config());
+  let raw = r#"[
+    ["jump", 7],
+    ["func", "add", 2, 2, 6, "a", "b"],
+    ["get", "a"],
+    ["get", "b"],
+    ["add", "int"],
+    ["return"],
+    ["stop"],
+    ["export", "add"]
+  ]"#;
+  let benchmark = vm
+    .tools()
+    .bench("function_call_bench")
+    .expect("benchmark requires debug capability");
+  benchmark.run(
+    || {
+      let mut vm = LightVM::new(config());
+      vm.load(raw);
+      let function = vm.export("add".to_string());
+      (vm, function)
+    },
+    |(vm, function)| function.call(vm, vec![5.into(), 6.into()]),
+  );
+}
diff --git a/rust/benches/optimize/function_call_bench.rs b/rust/benches/optimize/function_call_bench.rs
new file mode 100644
index 00000000..8f30ec03
--- /dev/null
+++ b/rust/benches/optimize/function_call_bench.rs
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+use lightvm::{
+  LightVM,
+  types::{
+    capability::Capability, runtime_config::RuntimeConfig, vmconfig::VmConfig,
+  },
+};
+
+fn config() -> VmConfig {
+  VmConfig {
+    caps: vec![Capability::Control, Capability::Debug, Capability::Observe],
+    runtime_config: Some(RuntimeConfig { nightly: true }),
+    ..Default::default()
+  }
+}
+
+fn main() {
+  let mut vm = LightVM::new(config());
+  let raw = r#"[
+    ["jump", 7],
+    ["func", "add", 2, 2, 6, "a", "b"],
+    ["get", "a"],
+    ["get", "b"],
+    ["add", "int"],
+    ["return"],
+    ["stop"],
+    ["export", "add"]
+  ]"#;
+  let tools = vm.tools();
+  let optimized = tools.optimize_bytecode(raw);
+  let benchmark = tools
+    .bench("function_call_bench")
+    .expect("benchmark requires debug capability");
+  benchmark.run(
+    || {
+      let mut vm = LightVM::new(config());
+      vm.load(optimized.clone());
+      let function = vm.export("add".to_string());
+      (vm, function)
+    },
+    |(vm, function)| function.call(vm, vec![5.into(), 6.into()]),
+  );
+}
diff --git a/scripts/bench/ts-bench.js b/scripts/bench/ts-bench.js
index 3aef4e5d..f6ac2464 100644
--- a/scripts/bench/ts-bench.js
+++ b/scripts/bench/ts-bench.js
@@ -31,7 +31,7 @@ console.log(
 );
 execSync('cargo build --release --features node', {
   stdio: 'inherit',
-  cwd: path.resolve(__dirname, '..'),
+  cwd: path.resolve(__dirname, '../..'),
 });
 console.log(
   `${s.bold}${s.green}✔${s.reset} ${s.bold}Rust build success!${s.reset}\n`,
@@ -67,8 +67,11 @@ console.log(
 console.log(
   `${s.bold}${s.cyan}⚡${s.reset} ${s.bold}Running benchmarks...${s.reset}`,
 );
-const targetDir = path.join(__dirname, '../ts', 'benchmarks');
-const files = fs.readdirSync(targetDir).filter((file) => file.endsWith('.ts'));
+const targetDir = path.join(rootDir, 'ts', 'benchmarks');
+const files = fs
+  .readdirSync(targetDir, { recursive: true })
+  .filter((file) => file.endsWith('.ts'))
+  .sort();
 
 files.forEach((file) => {
   console.log(
diff --git a/ts/benchmarks/normal/add_bench.ts b/ts/benchmarks/normal/add_bench.ts
new file mode 100644
index 00000000..c0b350ac
--- /dev/null
+++ b/ts/benchmarks/normal/add_bench.ts
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+});
+
+const vm = new LightVM(config());
+const raw = [
+  ['val', 'x'],
+  ['push', 5],
+  ['push', 8],
+  ['add', 'i16'],
+  ['set', 'x'],
+];
+
+vm.tools()
+  .bench('add_bench')
+  .run(
+    () => new LightVM(config()).load(raw),
+    (benchmarkVm) => benchmarkVm.run(),
+  );
diff --git a/ts/benchmarks/normal/assign_bench.ts b/ts/benchmarks/normal/assign_bench.ts
new file mode 100644
index 00000000..f712086d
--- /dev/null
+++ b/ts/benchmarks/normal/assign_bench.ts
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+});
+
+const vm = new LightVM(config());
+const raw = [
+  ['val', 'x'],
+  ['push', 5],
+  ['set', 'x'],
+];
+
+vm.tools()
+  .bench('assign_bench')
+  .run(
+    () => new LightVM(config()).load(raw),
+    (benchmarkVm) => benchmarkVm.run(),
+  );
diff --git a/ts/benchmarks/normal/concat_bench.ts b/ts/benchmarks/normal/concat_bench.ts
new file mode 100644
index 00000000..5042ce6f
--- /dev/null
+++ b/ts/benchmarks/normal/concat_bench.ts
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+});
+
+const vm = new LightVM(config());
+const raw = [
+  ['val', 'x'],
+  ['push', 'Hello from '],
+  ['push', 'LightVM!'],
+  ['set', 'x'],
+];
+
+vm.tools()
+  .bench('concat_bench')
+  .run(
+    () => new LightVM(config()).load(raw),
+    (benchmarkVm) => benchmarkVm.run(),
+  );
diff --git a/ts/benchmarks/normal/dead_code_bench.ts b/ts/benchmarks/normal/dead_code_bench.ts
new file mode 100644
index 00000000..c45c3a97
--- /dev/null
+++ b/ts/benchmarks/normal/dead_code_bench.ts
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+});
+
+const vm = new LightVM(config());
+const raw = [
+  ['push', 5],
+  ['push', 8],
+  ['add', 'i16'],
+  ['val', 'x'],
+  ['push', 9],
+  ['set', 'x'],
+];
+
+vm.tools()
+  .bench('dead_code_bench')
+  .run(
+    () => new LightVM(config()).load(raw),
+    (benchmarkVm) => benchmarkVm.run(),
+  );
diff --git a/ts/benchmarks/normal/function_call_bench.ts b/ts/benchmarks/normal/function_call_bench.ts
new file mode 100644
index 00000000..2ce14c51
--- /dev/null
+++ b/ts/benchmarks/normal/function_call_bench.ts
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+  runtimeConfig: { nightly: true },
+});
+const raw = [
+  ['jump', 7],
+  ['func', 'add', 2, 2, 6, 'a', 'b'],
+  ['get', 'a'],
+  ['get', 'b'],
+  ['add', 'int'],
+  ['return'],
+  ['stop'],
+  ['export', 'add'],
+];
+const vm = new LightVM(config());
+
+vm.tools()
+  .bench('function_call_bench')
+  .run(
+    () => {
+      const benchmarkVm = new LightVM(config()).load(raw);
+      return { vm: benchmarkVm, function: benchmarkVm.export('add') };
+    },
+    (state) => state.function.call(5, 6),
+  );
diff --git a/ts/benchmarks/normal/io_bench.ts b/ts/benchmarks/normal/io_bench.ts
new file mode 100644
index 00000000..5684e3e3
--- /dev/null
+++ b/ts/benchmarks/normal/io_bench.ts
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+});
+
+const vm = new LightVM(config());
+const raw = [['push', 'Hello from LightVM!'], ['println']];
+
+vm.tools()
+  .bench('io_bench')
+  .run(
+    () => new LightVM(config()).load(raw),
+    (benchmarkVm) => benchmarkVm.run(),
+  );
diff --git a/ts/benchmarks/add_bench.ts b/ts/benchmarks/optimize/add_bench.ts
similarity index 92%
rename from ts/benchmarks/add_bench.ts
rename to ts/benchmarks/optimize/add_bench.ts
index ea58e12e..43f8e920 100644
--- a/ts/benchmarks/add_bench.ts
+++ b/ts/benchmarks/optimize/add_bench.ts
@@ -8,7 +8,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import { LightVM, Capability } from '../../dist/index.min.mjs';
+import { LightVM, Capability } from '../../../dist/index.min.mjs';
 function runBenchmark() {
   const vm = new LightVM({
     caps: [Capability.Control, Capability.Debug, Capability.Observe],
diff --git a/ts/benchmarks/assign_bench.ts b/ts/benchmarks/optimize/assign_bench.ts
similarity index 92%
rename from ts/benchmarks/assign_bench.ts
rename to ts/benchmarks/optimize/assign_bench.ts
index facca0bc..1467dfa3 100644
--- a/ts/benchmarks/assign_bench.ts
+++ b/ts/benchmarks/optimize/assign_bench.ts
@@ -8,7 +8,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import { LightVM, Capability } from '../../dist/index.min.mjs';
+import { LightVM, Capability } from '../../../dist/index.min.mjs';
 function runBenchmark() {
   const vm = new LightVM({
     caps: [Capability.Control, Capability.Debug, Capability.Observe],
diff --git a/ts/benchmarks/concat_bench.ts b/ts/benchmarks/optimize/concat_bench.ts
similarity index 92%
rename from ts/benchmarks/concat_bench.ts
rename to ts/benchmarks/optimize/concat_bench.ts
index 0201b2df..6f293626 100644
--- a/ts/benchmarks/concat_bench.ts
+++ b/ts/benchmarks/optimize/concat_bench.ts
@@ -8,7 +8,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import { LightVM, Capability } from '../../dist/index.min.mjs';
+import { LightVM, Capability } from '../../../dist/index.min.mjs';
 function runBenchmark() {
   const vm = new LightVM({
     caps: [Capability.Control, Capability.Debug, Capability.Observe],
diff --git a/ts/benchmarks/dead_code_bench.ts b/ts/benchmarks/optimize/dead_code_bench.ts
similarity index 87%
rename from ts/benchmarks/dead_code_bench.ts
rename to ts/benchmarks/optimize/dead_code_bench.ts
index 7fa3fe16..4e45434d 100644
--- a/ts/benchmarks/dead_code_bench.ts
+++ b/ts/benchmarks/optimize/dead_code_bench.ts
@@ -8,7 +8,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import { LightVM, Capability } from '../../dist/index.min.mjs';
+import { LightVM, Capability } from '../../../dist/index.min.mjs';
 function runBenchmark() {
   const vm = new LightVM({
     caps: [Capability.Control, Capability.Debug, Capability.Observe],
@@ -17,6 +17,9 @@ function runBenchmark() {
     ['push', 5],
     ['push', 8],
     ['add', 'i16'],
+    ['val', 'x'],
+    ['push', 9],
+    ['set', 'x'],
   ];
   const tools = vm.tools();
   const optimized = tools.optimizeBytecode(raw);
diff --git a/ts/benchmarks/optimize/function_call_bench.ts b/ts/benchmarks/optimize/function_call_bench.ts
new file mode 100644
index 00000000..fd6dd925
--- /dev/null
+++ b/ts/benchmarks/optimize/function_call_bench.ts
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2026 SoTeen Studio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+import { Capability, LightVM } from '../../../dist/index.min.mjs';
+
+const config = () => ({
+  caps: [Capability.Control, Capability.Debug, Capability.Observe],
+  runtimeConfig: { nightly: true },
+});
+const raw = [
+  ['jump', 7],
+  ['func', 'add', 2, 2, 6, 'a', 'b'],
+  ['get', 'a'],
+  ['get', 'b'],
+  ['add', 'int'],
+  ['return'],
+  ['stop'],
+  ['export', 'add'],
+];
+const vm = new LightVM(config());
+const tools = vm.tools();
+const optimized = tools.optimizeBytecode(raw);
+
+tools.bench('function_call_bench').run(
+  () => {
+    const benchmarkVm = new LightVM(config()).load(optimized);
+    return { vm: benchmarkVm, function: benchmarkVm.export('add') };
+  },
+  (state) => state.function.call(5, 6),
+);
diff --git a/ts/benchmarks/io_bench.ts b/ts/benchmarks/optimize/io_bench.ts
similarity index 92%
rename from ts/benchmarks/io_bench.ts
rename to ts/benchmarks/optimize/io_bench.ts
index df672c2b..b87f3471 100644
--- a/ts/benchmarks/io_bench.ts
+++ b/ts/benchmarks/optimize/io_bench.ts
@@ -8,7 +8,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import { LightVM, Capability } from '../../dist/index.min.mjs';
+import { LightVM, Capability } from '../../../dist/index.min.mjs';
 function runBenchmark() {
   const vm = new LightVM({
     caps: [Capability.Control, Capability.Debug, Capability.Observe],