diff --git a/Makefile b/Makefile
index 02423043..d0233142 100644
--- a/Makefile
+++ b/Makefile
@@ -20,6 +20,7 @@ all: build/libllhttp.a build/libllhttp.so
 clean:
 	rm -rf release/
 	rm -rf build/
+	rm -rf test/tmp
 
 build/libllhttp.so: build/c/llhttp.o build/native/api.o \
 		build/native/http.o
diff --git a/bench/index.ts b/bench/native.ts
similarity index 100%
rename from bench/index.ts
rename to bench/native.ts
diff --git a/bench/wasm.ts b/bench/wasm.ts
new file mode 100644
index 00000000..820b6779
--- /dev/null
+++ b/bench/wasm.ts
@@ -0,0 +1,123 @@
+import { readFile } from "fs/promises";
+import * as constants from "../build/wasm/constants.js";
+
+function http(input) {
+  return input
+    .trim()
+    .replaceAll(/^\s+/gm, "")
+    .replaceAll("\n", "")
+    .replaceAll("\\r", "\r")
+    .replaceAll("\\n", "\n");
+}
+
+function formatNumber(num, precision) {
+  return num
+    .toLocaleString("en-US", {
+      minimumFractionDigits: precision,
+      maximumFractionDigits: precision,
+      useGrouping: "always",
+    })
+    .replaceAll(",", "_");
+}
+
+/* eslint-disable @stylistic/max-len */
+const samples = {
+  seanmonstar_httparse: http(`
+    GET /wp-content/uploads/2010/03/hello-kitty-darth-vader-pink.jpg HTTP/1.1\\r\\n
+    Host: www.kittyhell.com\\r\\n
+    User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; ja-JP-mac; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Pathtraq/0.9\\r\\n
+    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\\r\\n
+    Accept-Language: ja,en-us;q=0.7,en;q=0.3\\r\\n
+    Accept-Encoding: gzip,deflate\\r\\n
+    Accept-Charset: Shift_JIS,utf-8;q=0.7,*;q=0.7\\r\\n
+    Keep-Alive: 115\\r\\n
+    Connection: keep-alive\\r\\n
+    Cookie: wp_ozh_wsa_visits=2; wp_ozh_wsa_visit_lasttime=xxxxxxxxxx; __utma=xxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.x; __utmz=xxxxxxxxx.xxxxxxxxxx.x.x.utmccn=(referral)|utmcsr=reader.livedoor.com|utmcct=/reader/|utmcmd=referral\\r\\n\\r\\n
+  `),
+  nodejs_http_parser: http(`
+    POST /joyent/http-parser HTTP/1.1\\r\\n
+    Host: github.com\\r\\n
+    DNT: 1\\r\\n
+    Accept-Encoding: gzip, deflate, sdch\\r\\n
+    Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4\\r\\n
+    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1)
+    AppleWebKit/537.36 (KHTML, like Gecko)
+    Chrome/39.0.2171.65 Safari/537.36\\r\\n
+    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,
+    image/webp,*/*;q=0.8\\r\\n
+    Referer: https://github.com/joyent/http-parser\\r\\n
+    Connection: keep-alive\\r\\n
+    Transfer-Encoding: chunked\\r\\n
+    Cache-Control: max-age=0\\r\\n\\r\\nb\\r\\nhello world\\r\\n0\\r\\n\\r\\n
+  `)  
+};
+/* eslint-enable @stylistic/max-len */
+
+async function main () {
+  const mod = await WebAssembly.compile(
+    await readFile(new URL("../build/wasm/llhttp.wasm", import.meta.url))
+  );
+
+  const { exports: llhttp } = await WebAssembly.instantiate(mod, {
+    env: {
+      wasm_on_url() {
+        return 0;
+      },
+      wasm_on_status() {
+        return 0;
+      },
+      wasm_on_message_begin() {
+        return 0;
+      },
+      wasm_on_header_field() {
+        return 0;
+      },
+      wasm_on_header_value() {
+        return 0;
+      },
+      wasm_on_headers_complete() {
+        return 0;
+      },
+      wasm_on_body() {
+        return 0;
+      },
+      wasm_on_message_complete() {
+        return 0;
+      },
+    },
+  });
+
+  for (const [ name, payload ] of Object.entries(samples)) {
+    const len = payload.length;
+    const iterations = 2 ** 33 / len;
+    const total = iterations * len;
+
+    const parser = llhttp.llhttp_alloc(constants.TYPE.BOTH);
+    const ptr = llhttp.malloc(len);
+    new Uint8Array(llhttp.memory.buffer, ptr, len).set(Buffer.from(payload));
+
+    const start = process.hrtime.bigint();
+    for (let i = 0; i < iterations; i++) {
+      llhttp.llhttp_execute(parser, ptr, len);
+    }
+
+    llhttp.free(ptr);
+    llhttp.llhttp_free(ptr);
+
+    const time = Number(process.hrtime.bigint() - start) / 1e9;
+    const bw = total / time;
+
+    const label = name.padStart(21, " ");
+    const samples = formatNumber(iterations, 0).padStart(12);
+    const size = formatNumber(total / (1024 * 1024), 2).padStart(8);
+    const speed = formatNumber(bw / (1024 * 1024), 2).padStart(10);
+    const throughtput = formatNumber(iterations / time, 2).padStart(10);
+    const duration = formatNumber(time, 2).padStart(6);
+
+    console.log(
+      `${label} | ${samples} samples | ${size} MB | ${speed} MB/s | ${throughtput} ops/sec | ${duration} s`
+    );
+  }
+}
+
+main()
\ No newline at end of file
diff --git a/bin/build_wasm.ts b/bin/build_wasm.ts
index c3f8bc13..b3573324 100644
--- a/bin/build_wasm.ts
+++ b/bin/build_wasm.ts
@@ -40,8 +40,14 @@ if (process.argv[2] === '--docker') {
   if (process.platform === 'linux') {
     cmd += ` --user ${process.getuid!()}:${process.getegid!()}`;
   }
+  
+  if(process.env.NO_SSE) {
+    cmd += ` -e NO_SSE=${process.env.NO_SSE}`
+  }
+
   cmd += ` --mount type=bind,source=${WASM_SRC}/build,target=/home/node/llhttp/build llhttp_wasm_builder npm run wasm`;
 
+  
   console.log(`> ${cmd}\n\n`);
   execSync(cmd, { cwd: WASM_SRC, stdio: 'inherit' });
   process.exit(0);
@@ -67,6 +73,7 @@ execSync(
  -fno-exceptions \
  -fvisibility=hidden \
  -mexec-model=reactor \
+ ${process.env.NO_SSE ? '' : '-msimd128'} \
  -Wl,-error-limit=0 \
  -Wl,-O3 \
  -Wl,--lto-O3 \
diff --git a/package.json b/package.json
index 0f189ea9..192765e4 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,8 @@
     "src"
   ],
   "scripts": {
-    "bench": "node --import tsx bench/index.ts",
+    "bench": "node --import tsx bench/native.ts",
+    "bench-wasm": "node --import tsx bench/wasm.ts",
     "build": "node --import tsx bin/generate.ts",
     "build-ts": "tsc",
     "prebuild-wasm": "npm run wasm -- --prebuild && npm run wasm -- --setup",