diff --git a/.github/workflows/master_benchmarks.yml b/.github/workflows/master_benchmarks.yml
new file mode 100644
index 000000000..227913271
--- /dev/null
+++ b/.github/workflows/master_benchmarks.yml
@@ -0,0 +1,34 @@
+on:
+  push:
+    branches: main
+
+jobs:
+  run_benchmarks:
+    name: Run PR Benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Valgrind
+        run: sudo apt update && sudo apt install -y valgrind
+      - uses: taiki-e/install-action@cargo-binstall
+      - name: Install gungraun-runner
+        run: |
+          version=$(cargo metadata --format-version=1 |\
+            jq '.packages[] | select(.name == "gungraun").version' |\
+            tr -d '"'
+          )
+          cargo binstall --no-confirm gungraun-runner --version $version
+      - name: Run Benchmarks
+        run: cargo bench --manifest-path ./benches/Cargo.toml > benchmark_results.txt
+      - name: Track Benchmarks with Bencher
+        run: |
+          bencher run \
+          --host 'https://bencher.php.rs/api' \
+          --project ext-php-rs \
+          --token '${{ secrets.BENCHER_API_TOKEN }}' \
+          --branch master \
+          --testbed "$(php --version | head -n 1)" \
+          --err \
+          --adapter rust_gungraun \
+          --github-actions '${{ secrets.GITHUB_TOKEN }}' \
+          --file "./benchmark_results.txt"
diff --git a/.github/workflows/pr_benchmarks_archive.yml b/.github/workflows/pr_benchmarks_archive.yml
new file mode 100644
index 000000000..338011423
--- /dev/null
+++ b/.github/workflows/pr_benchmarks_archive.yml
@@ -0,0 +1,18 @@
+on:
+  pull_request_target:
+    types: [closed]
+
+jobs:
+  archive_fork_pr_branch:
+    name: Archive closed PR branch with Bencher
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: bencherdev/bencher@main
+      - name: Archive closed fork PR branch with Bencher
+        run: |
+          bencher archive \
+          --host 'https://bencher.php.rs/api' \
+          --project ext-php-rs \
+          --token '${{ secrets.BENCHER_API_TOKEN }}' \
+          --branch "$GITHUB_HEAD_REF"
diff --git a/.github/workflows/pr_benchmarks_run.yml b/.github/workflows/pr_benchmarks_run.yml
new file mode 100644
index 000000000..6da8d5ebe
--- /dev/null
+++ b/.github/workflows/pr_benchmarks_run.yml
@@ -0,0 +1,34 @@
+name: Run Benchmarks
+
+on:
+  pull_request:
+    types: [opened, reopened, edited, synchronize]
+
+jobs:
+  run_benchmarks:
+    name: Run PR Benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Valgrind
+        run: sudo apt update && sudo apt install -y valgrind
+      - uses: taiki-e/install-action@cargo-binstall
+      - name: Install gungraun-runner
+        run: |
+          version=$(cargo metadata --manifest-path ./benches/Cargo.toml --format-version=1 |\
+            jq '.packages[] | select(.name == "gungraun").version' |\
+            tr -d '"'
+          )
+          cargo binstall --no-confirm gungraun-runner --version $version
+      - name: Run Benchmarks
+        run: cargo bench --manifest-path ./benches/Cargo.toml > benchmark_results.txt
+      - name: Upload Benchmark Results
+        uses: actions/upload-artifact@v4
+        with:
+          name: benchmark_results.txt
+          path: ./benchmark_results.txt
+      - name: Upload Pull Request Event
+        uses: actions/upload-artifact@v4
+        with:
+          name: event.json
+          path: ${{ github.event_path }}
diff --git a/.github/workflows/pr_benchmarks_upload.yml b/.github/workflows/pr_benchmarks_upload.yml
new file mode 100644
index 000000000..88acf9d79
--- /dev/null
+++ b/.github/workflows/pr_benchmarks_upload.yml
@@ -0,0 +1,57 @@
+name: Upload PR Benchmark Results
+
+on:
+  workflow_run:
+    workflows: [Run Benchmarks]
+    types: [completed]
+
+jobs:
+  upload_benchmarks:
+    if: github.event.workflow_run.conclusion == 'success'
+    permissions:
+      pull-requests: write
+    runs-on: ubuntu-latest
+    env:
+      BENCHMARK_RESULTS: benchmark_results.txt
+      PR_EVENT: event.json
+    steps:
+      - name: Download Benchmark Results
+        uses: dawidd6/action-download-artifact@v6
+        with:
+          name: ${{ env.BENCHMARK_RESULTS }}
+          run_id: ${{ github.event.workflow_run.id }}
+      - name: Download PR Event
+        uses: dawidd6/action-download-artifact@v6
+        with:
+          name: ${{ env.PR_EVENT }}
+          run_id: ${{ github.event.workflow_run.id }}
+      - name: Export PR Event Data
+        uses: actions/github-script@v6
+        with:
+          script: |
+            let fs = require('fs');
+            let prEvent = JSON.parse(fs.readFileSync(process.env.PR_EVENT, {encoding: 'utf8'}));
+            core.exportVariable("PR_HEAD", prEvent.pull_request.head.ref);
+            core.exportVariable("PR_HEAD_SHA", prEvent.pull_request.head.sha);
+            core.exportVariable("PR_BASE", prEvent.pull_request.base.ref);
+            core.exportVariable("PR_BASE_SHA", prEvent.pull_request.base.sha);
+            core.exportVariable("PR_NUMBER", prEvent.number);
+      - uses: bencherdev/bencher@main
+      - name: Track Benchmarks with Bencher
+        run: |
+          bencher run \
+          --host 'https://bencher.php.rs/api' \
+          --project ext-php-rs \
+          --token '${{ secrets.BENCHER_API_TOKEN }}' \
+          --branch "$PR_HEAD" \
+          --hash "$PR_HEAD_SHA" \
+          --start-point "$PR_BASE" \
+          --start-point-hash "$PR_BASE_SHA" \
+          --start-point-clone-thresholds \
+          --start-point-reset \
+          --testbed "$(php --version | head -n 1)" \
+          --err \
+          --adapter rust_gungraun \
+          --github-actions '${{ secrets.GITHUB_TOKEN }}' \
+          --ci-number "$PR_NUMBER" \
+          --file "$BENCHMARK_RESULTS"
diff --git a/Cargo.toml b/Cargo.toml
index b07f582d0..e2d49412a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -55,6 +55,7 @@ static = ["bindgen/static"]
 
 [workspace]
 members = ["crates/macros", "crates/cli", "tests"]
+exclude = ["benches"]
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--cfg", "docs"]
diff --git a/benches/.cargo/config.toml b/benches/.cargo/config.toml
new file mode 100644
index 000000000..88c4308c0
--- /dev/null
+++ b/benches/.cargo/config.toml
@@ -0,0 +1,14 @@
+[target.'cfg(not(target_os = "windows"))']
+rustflags = ["-C", "link-arg=-Wl,-undefined,dynamic_lookup"]
+
+[target.x86_64-pc-windows-msvc]
+linker = "rust-lld"
+
+[target.i686-pc-windows-msvc]
+linker = "rust-lld"
+
+[target.'cfg(target_env = "musl")']
+rustflags = ["-C", "target-feature=-crt-static"]
+
+[profile.bench]
+debug = true
diff --git a/benches/.gitignore b/benches/.gitignore
new file mode 100644
index 000000000..ea8c4bf7f
--- /dev/null
+++ b/benches/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/benches/Cargo.toml b/benches/Cargo.toml
new file mode 100644
index 000000000..61deab0f3
--- /dev/null
+++ b/benches/Cargo.toml
@@ -0,0 +1,25 @@
+[package]
+name = "benches"
+version = "0.1.0"
+edition = "2024"
+publish = false
+
+[dependencies]
+ext-php-rs = { path = "../" }
+gungraun = { version = "0.17.0", features = ["client_requests"] }
+
+[features]
+default = ["enum", "runtime", "closure"]
+enum = ["ext-php-rs/enum"]
+anyhow = ["ext-php-rs/anyhow"]
+runtime = ["ext-php-rs/runtime"]
+closure = ["ext-php-rs/closure"]
+static = ["ext-php-rs/static"]
+
+[lib]
+crate-type = ["cdylib"]
+bench = false
+
+[[bench]]
+name = "binary_bench"
+harness = false
diff --git a/benches/benches/binary_bench.rs b/benches/benches/binary_bench.rs
new file mode 100644
index 000000000..8cd81bfde
--- /dev/null
+++ b/benches/benches/binary_bench.rs
@@ -0,0 +1,102 @@
+use std::{
+    process::Command,
+    sync::{LazyLock, Once},
+};
+
+use gungraun::{
+    binary_benchmark, binary_benchmark_group, main, BinaryBenchmarkConfig, Callgrind,
+    FlamegraphConfig,
+};
+
+static BUILD: Once = Once::new();
+static EXT_TARGET_DIR: LazyLock<String> = LazyLock::new(|| {
+    let mut dir = std::env::current_dir().expect("Could not get cwd");
+    dir.push("target");
+    dir.push("release");
+    dir.display().to_string()
+});
+
+fn setup() {
+    BUILD.call_once(|| {
+        let mut command = Command::new("cargo");
+        command.arg("build");
+
+        command.arg("--release");
+
+        // Build features list dynamically based on compiled features
+        // Note: Using vec_init_then_push pattern here is intentional due to conditional compilation
+        #[allow(clippy::vec_init_then_push)]
+        {
+            let mut features = vec![];
+            #[cfg(feature = "enum")]
+            features.push("enum");
+            #[cfg(feature = "closure")]
+            features.push("closure");
+            #[cfg(feature = "anyhow")]
+            features.push("anyhow");
+            #[cfg(feature = "runtime")]
+            features.push("runtime");
+            #[cfg(feature = "static")]
+            features.push("static");
+
+            if !features.is_empty() {
+                command.arg("--no-default-features");
+                command.arg("--features").arg(features.join(","));
+            }
+        }
+
+        let result = command.output().expect("failed to execute cargo build");
+
+        assert!(
+            result.status.success(),
+            "Extension build failed:\nstdout: {}\nstderr: {}",
+            String::from_utf8_lossy(&result.stdout),
+            String::from_utf8_lossy(&result.stderr)
+        );
+    });
+}
+
+#[binary_benchmark]
+#[bench::single_function_call(args = ("benches/function_call.php", 1))]
+#[bench::multiple_function_calls(args = ("benches/function_call.php", 10))]
+#[bench::lots_of_function_calls(args = ("benches/function_call.php", 100_000))]
+fn function_calls(path: &str, cnt: usize) -> gungraun::Command {
+    setup();
+
+    gungraun::Command::new("php")
+        .arg(format!("-dextension={}/libbenches.so", *EXT_TARGET_DIR))
+        .arg(path)
+        .arg(cnt.to_string())
+        .build()
+}
+
+#[binary_benchmark]
+#[bench::single_callback_call(args = ("benches/callback_call.php", 1))]
+#[bench::multiple_callback_calls(args = ("benches/callback_call.php", 10))]
+#[bench::lots_of_callback_calls(args = ("benches/callback_call.php", 100_000))]
+fn callback_calls(path: &str, cnt: usize) -> gungraun::Command {
+    setup();
+
+    gungraun::Command::new("php")
+        .arg(format!("-dextension={}/libbenches.so", *EXT_TARGET_DIR))
+        .arg(path)
+        .arg(cnt.to_string())
+        .build()
+}
+
+binary_benchmark_group!(
+    name = function;
+    benchmarks = function_calls
+);
+
+binary_benchmark_group!(
+    name = callback;
+    benchmarks = callback_calls
+);
+
+main!(
+    config = BinaryBenchmarkConfig::default()
+        .tool(Callgrind::with_args(["--instr-atstart=no", "--I1=32768,8,64", "--D1=32768,8,64", "--LL=67108864,16,64"])
+        .flamegraph(FlamegraphConfig::default()));
+    binary_benchmark_groups = function, callback
+);
diff --git a/benches/benches/callback_call.php b/benches/benches/callback_call.php
new file mode 100644
index 000000000..04123721b
--- /dev/null
+++ b/benches/benches/callback_call.php
@@ -0,0 +1,5 @@
+<?php
+
+declare(strict_types=1);
+
+bench_callback_function(fn ($i) => $i * 2, (int) $argv[1]);
diff --git a/benches/benches/function_call.php b/benches/benches/function_call.php
new file mode 100644
index 000000000..3c54f6b6d
--- /dev/null
+++ b/benches/benches/function_call.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+start_instrumentation();
+
+foreach (range(1, $argv[1]) as $i) {
+    bench_function($i);
+}
+
+stop_instrumentation();
diff --git a/benches/src/lib.rs b/benches/src/lib.rs
new file mode 100644
index 000000000..825644f3f
--- /dev/null
+++ b/benches/src/lib.rs
@@ -0,0 +1,47 @@
+#![cfg_attr(windows, feature(abi_vectorcall))]
+#![allow(
+    clippy::must_use_candidate,
+    clippy::missing_panics_doc,
+    clippy::needless_pass_by_value,
+    clippy::implicit_hasher
+)]
+
+use ext_php_rs::{prelude::*, types::Zval};
+
+#[php_function]
+pub fn bench_function(n: u64) -> u64 {
+    // A simple function that does not do much work
+    n
+}
+
+#[php_function]
+pub fn bench_callback_function(callback: ZendCallable, n: usize) {
+    // Call the provided PHP callable with a fixed argument
+    start_instrumentation();
+    for i in 0..n {
+        callback
+            .try_call(vec![&i])
+            .expect("Failed to call function");
+    }
+    stop_instrumentation();
+}
+
+#[php_function]
+pub fn start_instrumentation() {
+    gungraun::client_requests::callgrind::start_instrumentation();
+    // gungraun::client_requests::callgrind::toggle_collect();
+}
+
+#[php_function]
+pub fn stop_instrumentation() {
+    gungraun::client_requests::callgrind::stop_instrumentation();
+}
+
+#[php_module]
+pub fn build_module(module: ModuleBuilder) -> ModuleBuilder {
+    module
+        .function(wrap_function!(bench_function))
+        .function(wrap_function!(bench_callback_function))
+        .function(wrap_function!(start_instrumentation))
+        .function(wrap_function!(stop_instrumentation))
+}
diff --git a/flake.lock b/flake.lock
index 594401cd2..bc46cd1f5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1762977756,
-        "narHash": "sha256-4PqRErxfe+2toFJFgcRKZ0UI9NSIOJa+7RXVtBhy4KE=",
+        "lastModified": 1765186076,
+        "narHash": "sha256-hM20uyap1a0M9d344I692r+ik4gTMyj60cQWO+hAYP8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "c5ae371f1a6a7fd27823bc500d9390b38c05fa55",
+        "rev": "addf7cf5f383a3101ecfba091b98d0a1263dc9b8",
         "type": "github"
       },
       "original": {
@@ -29,11 +29,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1763087910,
-        "narHash": "sha256-eB9Z1mWd1U6N61+F8qwDggX0ihM55s4E0CluwNukJRU=",
+        "lastModified": 1765248027,
+        "narHash": "sha256-ngar+yP06x3+2k2Iey29uU0DWx5ur06h3iPBQXlU+yI=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "cf4a68749733d45c0420726596367acd708eb2e8",
+        "rev": "7b50ad68415ae5be7ee4cc68fa570c420741b644",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 3d9f93a15..e9396afa2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,12 +28,14 @@
             php-dev
             libclang.lib
             clang
+            valgrind
           ];
 
           nativeBuildInputs = [ pkgs.rust-bin.stable.latest.default ];
 
           shellHook = ''
             export LIBCLANG_PATH="${pkgs.libclang.lib}/lib"
+            export GUNGRAUN_VALGRIND_INCLUDE="${pkgs.valgrind.dev}/include"
           '';
         };
       };