diff --git a/crates/lb/src/fs.rs b/crates/lb/src/fs.rs
index 8e5f224..8cffd32 100644
--- a/crates/lb/src/fs.rs
+++ b/crates/lb/src/fs.rs
@@ -1,15 +1,15 @@
-//! The `lb:fs` module provides utilities for interacting with the file system asynchronously.
+//! The `lb:fs` library provides utilities for interacting with the file system asynchronously.
 //!
 //! # Exports
 //!
-//! See [`lb_libfs`] for items exported by this module.
+//! See [`lb_libfs`] for items exported by this library.
 use luaffi::{cdef, metatype};
 use std::io;
 use tokio::fs;
 
-/// Items exported by the `lb:fs` module.
+/// Items exported by the `lb:fs` library.
 ///
-/// This module can be obtained by calling `require` in Lua.
+/// This library can be obtained by calling `require` in Lua.
 ///
 /// ```lua
 /// local fs = require("lb:fs");
diff --git a/crates/lb/src/net.rs b/crates/lb/src/net.rs
index e159e52..27594ac 100644
--- a/crates/lb/src/net.rs
+++ b/crates/lb/src/net.rs
@@ -1,9 +1,9 @@
-//! The `lb:net` module provides an asynchronous network API for creating TCP or UDP servers and
+//! The `lb:net` library provides an asynchronous network API for creating TCP or UDP servers and
 //! clients.
 //!
 //! # Exports
 //!
-//! See [`lb_libnet`] for items exported by this module.
+//! See [`lb_libnet`] for items exported by this library.
 use derive_more::{From, FromStr};
 use luaffi::{cdef, metatype};
 use std::{
@@ -12,9 +12,9 @@ use std::{
 };
 use tokio::net::{TcpListener, TcpSocket, TcpStream};
 
-/// Items exported by the `lb:net` module.
+/// Items exported by the `lb:net` library.
 ///
-/// This module can be obtained by calling `require` in Lua.
+/// This library can be obtained by calling `require` in Lua.
 ///
 /// ```lua
 /// local net = require("lb:net");
diff --git a/crates/lb/src/runtime.rs b/crates/lb/src/runtime.rs
index 84a2757..e4708c2 100644
--- a/crates/lb/src/runtime.rs
+++ b/crates/lb/src/runtime.rs
@@ -41,6 +41,7 @@ impl Builder {
                 let mut s = State::new()?;
                 let mut chunk = Chunk::new(self.registry.done());
                 chunk.extend(include_bytes!("./runtime.lua"));
+                // println!("{chunk}");
                 s.eval(chunk.path("[luby]"), 0, 0)?;
                 s
             },
diff --git a/test.lua b/test.lua
index de9e518..72ad083 100644
--- a/test.lua
+++ b/test.lua
@@ -1,6 +1,19 @@
-local ffi = require("ffi")
-local lb = ffi.new("struct lb_core")
+local fs = require("lb:fs")
 
-print(lb)
+-- do
+--   local start = os.clock()
+--   for i = 1, 50000 do
+--     fs:read("crates/luaffi_impl/src/metatype.rs")
+--   end
+--   local finish = os.clock()
+--   print("finish in " .. (finish - start))
+-- end
 
-lb.spawn("")
+do
+  local start = os.clock()
+  for i = 1, 30000 do
+    fs:read_sync("bacon.toml")
+  end
+  local finish = os.clock()
+  print("finish in " .. (finish - start))
+end