1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889 |
- var source = new Buffer(100),
- dest = new Buffer(100), i, j, k, tmp, count = 1000000, bytes = 100;
-
- for (i = 99 ; i >= 0 ; i--) {
- source[i] = 120;
- }
- var str = "This is a nice String.",
- buf = new Buffer("This is a lovely Buffer.");
- var start = new Date();
- for (i = count * 100; i > 0 ; i--) {
- if (Buffer.isBuffer(str)) {}
- }
- var end = new Date();
- console.log("Buffer.isBuffer(str) " + (end - start) + " ms");
- var start = new Date();
- for (i = count * 100; i > 0 ; i--) {
- if (Buffer.isBuffer(buf)) {}
- }
- var end = new Date();
- console.log("Buffer.isBuffer(buf) " + (end - start) + " ms");
- var start = new Date();
- for (i = count * 100; i > 0 ; i--) {
- if (str instanceof Buffer) {}
- }
- var end = new Date();
- console.log("str instanceof Buffer " + (end - start) + " ms");
- var start = new Date();
- for (i = count * 100; i > 0 ; i--) {
- if (buf instanceof Buffer) {}
- }
- var end = new Date();
- console.log("buf instanceof Buffer " + (end - start) + " ms");
- for (i = bytes ; i > 0 ; i --) {
- var start = new Date();
- for (j = count ; j > 0; j--) {
- tmp = source.toString("ascii", 0, bytes);
- }
- var end = new Date();
- console.log("toString() " + i + " bytes " + (end - start) + " ms");
- }
- for (i = bytes ; i > 0 ; i --) {
- var start = new Date();
- for (j = count ; j > 0; j--) {
- tmp = "";
- for (k = 0; k <= i ; k++) {
- tmp += String.fromCharCode(source[k]);
- }
- }
- var end = new Date();
- console.log("manual string " + i + " bytes " + (end - start) + " ms");
- }
- for (i = bytes ; i > 0 ; i--) {
- var start = new Date();
- for (j = count ; j > 0 ; j--) {
- for (k = i ; k > 0 ; k--) {
- dest[k] = source[k];
- }
- }
- var end = new Date();
- console.log("Manual copy " + i + " bytes " + (end - start) + " ms");
- }
- for (i = bytes ; i > 0 ; i--) {
- var start = new Date();
- for (j = count ; j > 0 ; j--) {
- for (k = i ; k > 0 ; k--) {
- dest[k] = 120;
- }
- }
- var end = new Date();
- console.log("Direct assignment " + i + " bytes " + (end - start) + " ms");
- }
- for (i = bytes ; i > 0 ; i--) {
- var start = new Date();
- for (j = count ; j > 0 ; j--) {
- source.copy(dest, 0, 0, i);
- }
- var end = new Date();
- console.log("Buffer.copy() " + i + " bytes " + (end - start) + " ms");
- }
|