Page MenuHomePhorge
Files F7535192

bench_delete.js
No OneTemporary
Actions

Size
1 KB
Referenced Files
None
Subscribers
None

bench_delete.js
View Options

// Benchmark: delete operator performance
function bench(name, fn, iterations) {
const start = Date.now();
fn(iterations);
const elapsed = Date.now() - start;
console.log(name + ": " + elapsed + "ms (" + iterations + " iters, " + (elapsed / iterations * 1000).toFixed(2) + "µs/op)");
}
bench("delete single prop", function(n) {
for (let i = 0; i < n; i++) {
let o = { a: 1 };
delete o.a;
}
}, 5000);
bench("delete from 10-prop obj", function(n) {
for (let i = 0; i < n; i++) {
let o = { a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7, h: 8, i: 9, j: 10 };
delete o.e;
}
}, 5000);
bench("repeated delete (5 of 10)", function(n) {
for (let i = 0; i < n; i++) {
let o = { a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7, h: 8, i: 9, j: 10 };
delete o.a;
delete o.b;
delete o.c;
delete o.d;
delete o.e;
}
}, 2000);
bench("delete + re-add cycle", function(n) {
let o = { x: 1 };
for (let i = 0; i < n; i++) {
delete o.x;
o.x = i;
}
}, 5000);
bench("delete non-existent", function(n) {
let o = { a: 1 };
for (let i = 0; i < n; i++) {
delete o.z;
}
}, 5000);
bench("delete computed key", function(n) {
for (let i = 0; i < n; i++) {
let o = { a: 1, b: 2, c: 3 };
delete o["b"];
}
}, 5000);
bench("delete from 50-prop obj", function(n) {
for (let i = 0; i < n; i++) {
let o = {};
for (let j = 0; j < 50; j++) o["k" + j] = j;
delete o["k25"];
}
}, 1000);
bench("delete 25 from 50-prop obj", function(n) {
for (let i = 0; i < n; i++) {
let o = {};
for (let j = 0; j < 50; j++) o["k" + j] = j;
for (let j = 0; j < 25; j++) delete o["k" + j];
}
}, 500);
bench("baseline: prop set only", function(n) {
for (let i = 0; i < n; i++) {
let o = { a: 1, b: 2, c: 3, d: 4, e: 5 };
o.f = 6;
}
}, 5000);

File Metadata

Mime Type
text/plain
Expires
Wed, Jun 17, 12:02 PM (1 d, 20 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
538887
Default Alt Text
bench_delete.js (1 KB)

Event Timeline