Update fast buffer benchmarks

ry · ry · commit fe3b0356bbbe · 2010-09-08T10:23:12.000-07:00
diff --git a/benchmark/buffer_creation.js b/benchmark/buffer_creation.js
@@ -1,6 +1,6 @@
+SlowBuffer = require('buffer').SlowBuffer;
 
-
-for (var i = 0; i < 9e7; i++) {
-  b = new Buffer(10);
+for (var i = 0; i < 1e6; i++) {
+  b = new SlowBuffer(10);
   b[1] = 2
 }
diff --git a/benchmark/fast_buffer2.js b/benchmark/fast_buffer2.js
@@ -0,0 +1,42 @@
+var SlowBuffer = require('buffer').SlowBuffer;
+var POOLSIZE = 8*1024;
+var pool;
+
+function allocPool () {
+  pool = new SlowBuffer(POOLSIZE);
+  pool.used = 0;
+}
+
+function FastBuffer (length) {
+  this.length = length;
+
+  if (length > POOLSIZE) {
+    // Big buffer, just alloc one.
+    this.parent = new Buffer(length);
+    this.offset = 0;
+  } else {
+    // Small buffer.
+    if (!pool || pool.length - pool.used < length) allocPool();
+    this.parent = pool;
+    this.offset = pool.used;
+    pool.used += length;
+  }
+
+  // HERE HERE HERE
+  SlowBuffer.makeFastBuffer(this.parent, this, this.offset, this.length);
+}
+
+exports.FastBuffer = FastBuffer;
+
+FastBuffer.prototype.get = function (i) {
+  if (i < 0 || i >= this.length) throw new Error("oob");
+  return this.parent[this.offset + i];
+};
+
+FastBuffer.prototype.set = function (i, v) {
+  if (i < 0 || i >= this.length) throw new Error("oob");
+  return this.parent[this.offset + i] = v;
+};
+
+// TODO define slice, toString, write, etc.
+// slice should not use c++
diff --git a/benchmark/fast_buffer2_creation.js b/benchmark/fast_buffer2_creation.js
@@ -0,0 +1,6 @@
+
+FastBuffer = require('./fast_buffer2').FastBuffer;
+for (var i = 0; i < 1e6; i++) {
+  b = new FastBuffer(10);
+  b[1] = 2;
+}
diff --git a/benchmark/fast_buffer_creation.js b/benchmark/fast_buffer_creation.js
@@ -0,0 +1,4 @@
+for (var i = 0; i < 1e6; i++) {
+  b = new Buffer(10);
+  b[1] = 2;
+}

Original file line number	Diff line number	Diff line change
`@@ -1,6 +1,6 @@`
	`1`	`+SlowBuffer = require('buffer').SlowBuffer;`
`1`	`2`
`2`		`-`
`3`		`-for (var i = 0; i < 9e7; i++) {`
`4`		`- b = new Buffer(10);`
	`3`	`+for (var i = 0; i < 1e6; i++) {`
	`4`	`+ b = new SlowBuffer(10);`
`5`	`5`	`b[1] = 2`
`6`	`6`	`}`