90 lines
2.3 KiB
JavaScript
90 lines
2.3 KiB
JavaScript
var source = new Buffer(100),
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dest = new Buffer(100), i, j, k, tmp, count = 1000000, bytes = 100;
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for (i = 99 ; i >= 0 ; i--) {
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source[i] = 120;
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}
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var str = "This is a nice String.",
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buf = new Buffer("This is a lovely Buffer.");
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var start = new Date();
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for (i = count * 100; i > 0 ; i--) {
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if (Buffer.isBuffer(str)) {}
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}
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var end = new Date();
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console.log("Buffer.isBuffer(str) " + (end - start) + " ms");
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var start = new Date();
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for (i = count * 100; i > 0 ; i--) {
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if (Buffer.isBuffer(buf)) {}
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}
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var end = new Date();
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console.log("Buffer.isBuffer(buf) " + (end - start) + " ms");
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var start = new Date();
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for (i = count * 100; i > 0 ; i--) {
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if (str instanceof Buffer) {}
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}
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var end = new Date();
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console.log("str instanceof Buffer " + (end - start) + " ms");
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var start = new Date();
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for (i = count * 100; i > 0 ; i--) {
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if (buf instanceof Buffer) {}
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}
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var end = new Date();
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console.log("buf instanceof Buffer " + (end - start) + " ms");
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for (i = bytes ; i > 0 ; i --) {
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var start = new Date();
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for (j = count ; j > 0; j--) {
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tmp = source.toString("ascii", 0, bytes);
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}
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var end = new Date();
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console.log("toString() " + i + " bytes " + (end - start) + " ms");
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}
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for (i = bytes ; i > 0 ; i --) {
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var start = new Date();
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for (j = count ; j > 0; j--) {
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tmp = "";
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for (k = 0; k <= i ; k++) {
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tmp += String.fromCharCode(source[k]);
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}
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}
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var end = new Date();
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console.log("manual string " + i + " bytes " + (end - start) + " ms");
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}
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for (i = bytes ; i > 0 ; i--) {
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var start = new Date();
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for (j = count ; j > 0 ; j--) {
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for (k = i ; k > 0 ; k--) {
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dest[k] = source[k];
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}
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}
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var end = new Date();
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console.log("Manual copy " + i + " bytes " + (end - start) + " ms");
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}
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for (i = bytes ; i > 0 ; i--) {
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var start = new Date();
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for (j = count ; j > 0 ; j--) {
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for (k = i ; k > 0 ; k--) {
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dest[k] = 120;
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}
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}
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var end = new Date();
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console.log("Direct assignment " + i + " bytes " + (end - start) + " ms");
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}
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for (i = bytes ; i > 0 ; i--) {
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var start = new Date();
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for (j = count ; j > 0 ; j--) {
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source.copy(dest, 0, 0, i);
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}
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var end = new Date();
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console.log("Buffer.copy() " + i + " bytes " + (end - start) + " ms");
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}
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