more work on buffer

1 files changed, 77 insertions, 0 deletions

diff --git a/bench/snippets/buffer-read.js b/bench/snippets/buffer-read.js
new file mode 100644
index 000000000..314f1d69e
--- /dev/null
+++ b/bench/snippets/buffer-read.js
@@ -0,0 +1,77 @@
+// import { Buffer } from "buffer";
+var buf = new Buffer(1024);
+// var buf = new Uint8Array(1024);
+var view = new DataView(buf.buffer);
+var INTERVAL = 9999999;
+var time = (name, fn) => {
+  for (let i = 0; i < INTERVAL; i++) fn();
+
+  console.time(name.padEnd("DataView.readBigUInt64 (LE)".length));
+  for (let i = 0; i < INTERVAL; i++) fn();
+  console.timeEnd(name.padEnd("DataView.readBigUInt64 (LE)".length));
+};
+
+console.log(
+  `Run ${new Intl.NumberFormat().format(INTERVAL)} times with a warmup:`,
+  "\n"
+);
+var array = new Uint8Array(1024);
+time("Buffer[]     ", () => buf[0]);
+time("Uint8Array[]", () => array[0]);
+console.log("");
+
+time("Buffer.getBigInt64BE     ", () => buf.readBigInt64BE(0));
+time("DataView.getBigInt64 (BE)", () => view.getBigInt64(0, false));
+console.log("");
+
+time("Buffer.readBigInt64LE     ", () => buf.readBigInt64LE(0));
+time("DataView.readBigInt64 (LE)", () => view.getBigInt64(0, true));
+console.log("");
+time("Buffer.getBigUInt64BE     ", () => buf.readBigUInt64BE(0));
+time("DataView.getBigUInt64 (BE)", () => view.getBigUint64(0, false));
+console.log("");
+time("Buffer.readBigUInt64LE     ", () => buf.readBigUInt64LE(0));
+time("DataView.readBigUInt64 (LE)", () => view.getBigUint64(0, true));
+console.log("");
+time("Buffer.getDoubleBE     ", () => buf.readDoubleBE(0));
+time("DataView.getDouble (BE)", () => view.getFloat64(0, false));
+console.log("");
+time("Buffer.readDoubleLE     ", () => buf.readDoubleLE(0));
+time("DataView.readDouble (LE)", () => view.getFloat64(0, true));
+console.log("");
+time("Buffer.getFloatBE     ", () => buf.readFloatBE(0));
+time("DataView.getFloat (BE)", () => view.getFloat32(0, false));
+console.log("");
+time("Buffer.readFloatLE     ", () => buf.readFloatLE(0));
+time("DataView.readFloat (LE)", () => view.getFloat32(0, true));
+console.log("");
+time("Buffer.getInt16BE     ", () => buf.readInt16BE(0));
+time("DataView.getInt16 (BE)", () => view.getInt16(0, false));
+console.log("");
+time("Buffer.readInt16LE     ", () => buf.readInt16LE(0));
+time("DataView.readInt16 (LE)", () => view.getInt16(0, true));
+console.log("");
+time("Buffer.getInt32BE     ", () => buf.readInt32BE(0));
+time("DataView.getInt32 (BE)", () => view.getInt32(0, false));
+console.log("");
+time("Buffer.readInt32LE     ", () => buf.readInt32LE(0));
+time("DataView.readInt32 (LE)", () => view.getInt32(0, true));
+console.log("");
+time("Buffer.readInt8     ", () => buf.readInt8(0));
+time("DataView.readInt (t8)", () => view.getInt8(0));
+console.log("");
+time("Buffer.getUInt16BE     ", () => buf.readUInt16BE(0));
+time("DataView.getUInt16 (BE)", () => view.getUint16(0, false));
+console.log("");
+time("Buffer.readUInt16LE     ", () => buf.readUInt16LE(0));
+time("DataView.readUInt16 (LE)", () => view.getUint16(0, true));
+console.log("");
+time("Buffer.getUInt32BE     ", () => buf.readUInt32BE(0));
+time("DataView.getUInt32 (BE)", () => view.getUint32(0, false));
+console.log("");
+time("Buffer.readUInt32LE     ", () => buf.readUInt32LE(0));
+time("DataView.getUInt32 (LE)", () => view.getUint32(0, true));
+console.log("");
+time("Buffer.readUInt8     ", () => buf.readUInt8(0));
+time("DataView.getUInt (t8)", () => view.getUint8(0));
+console.log("");