Benchmark: HashBounds - MeasureThat.net

Script Preparation code:

/*
       HashBounds - A hierarchical spacial hashing system
    Copyright (C) 2016 Andrew S

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
function Holder(parent, i) {
    this.parent = parent;
    if (this.parent) this.parent.children.push(this)
    this.map = new Map();
    this.len = 0;
    this.skip = 1;
    this.id = ~~(Math.random() * 100)
    this.children = []
    this.i = i;
    this.start = this.i;
}
Holder.prototype.set = function (id, node) {

    this.map.set(id, node)
    this.add()
}
Holder.prototype.add = function () {
    ++this.len;

    this.skip = 0;

    if (this.parent) {
        this.parent.add();


    }
}
Holder.prototype.toArray = function () {
    var nodes = [];
    this.map.forEach(function (n) {
        nodes.push(n)
    })
    return nodes
}
Holder.prototype.sub = function () {
    --this.len;
    if (!this.len) {
        this.skip = 1;
        this.start = this.i;
    }
    if (this.parent) {
        this.parent.sub();
        if (this.parent.skip) {
            this.skip = this.parent.skip << 1;
            this.start = this.parent.start << 1;
        }

    }
}
Holder.prototype.delete = function (id) {
    this.map.delete(id)
    this.sub()
}
Holder.prototype.every = function (c) {
    var a = this.map.entries()
    var b;
    while (b = a.next().value) {
        if (!c(b[1], b[0])) return false;
    }
    return true;
}
Holder.prototype.forEach = function (c) {
    return this.map.forEach(c);
}

function Grid(g, p, size, minc, prev) {
    this.POWER = g;
    this.LEVEL = p;
    this.PREV = prev;
    this.SIZE = size;
    this.MIN = minc * -1;
    this.DATA = {};
    this.LENGTH = 0;
    this.init()
}
Grid.prototype.init = function () {
    if (this.SIZE >= 65535) {
        throw "Maximum amount of buckets are 65535^2"
    } // Max limit is 65535 (16 bits) 
    // console.log(this.SIZE)
    for (var j = this.MIN; j <= this.SIZE; ++j) {
        var x = j << 16
        var bx = (j >> 1) << 16;
        for (var i = this.MIN; i <= this.SIZE; ++i) {

            var by = i >> 1
            var key = this._getKey(x, i);


            if (this.PREV) var l = this.PREV.DATA[this._getKey(bx, by)];
            else var l = false;
            this.DATA[key] = new Holder(l, i);

        }
    }
}

Grid.prototype.getKey = function (x, y) {
    return {
        x: x >> this.POWER,
        y: y >> this.POWER
    }
}
Grid.prototype._getKey = function (x, y) {
    return x | y

}
Grid.prototype._get = function (bounds, call) {
    var x1 = bounds.x,
        y1 = bounds.y,
        x2 = bounds.x + bounds.width,
        y2 = bounds.y + bounds.height;

    var k1 = this.getKey(x1, y1)
    var k2 = this.getKey(x2, y2)

    for (var j = k1.x; j <= k2.x; ++j) {

        var x = j << 16;

        for (var i = k1.y; i <= k2.y; ++i) {


            var key = this._getKey(x, i);
            if (this.DATA[key]) {

                if (this.DATA[key].skip > 1) {

                    i = (this.DATA[key].start + this.DATA[key].skip - 1);

                    //console.log(this.DATA[key].start, this.DATA[key].skip)
                } else {

                    if (!call(this.DATA[key])) return false
                }
            }

        }
    }
    return true;
}

Grid.prototype.insert = function (node) {

    //   var a = this.getKey(node.bounds.width, node.bounds.height);
    // if (a.x + a.y >= 2 && this.LEVEL != 0) return false;
    this.LENGTH++;
    var x1 = node.bounds.x,
        y1 = node.bounds.y,
        x2 = node.bounds.x + node.bounds.width,
        y2 = node.bounds.y + node.bounds.height;

    var k1 = this.getKey(x1, y1)
    var k2 = this.getKey(x2, y2)
    node.hash.k1 = k1
    node.hash.k2 = k2
    node.hash.level = this.LEVEL
    var lenX = k2.x + 1,
        lenY = k2.y + 1;
    for (var j = k1.x; j < lenX; ++j) {
        var x = j << 16;
        for (var i = k1.y; i < lenY; ++i) {

            var ke = this._getKey(x, i);
            // console.log(ke)
            this.DATA[ke].set(node._HashID, node)
        }

    }
    return true;
}
Grid.prototype.delete = function (node) {
    var k1 = node.hash.k1
    var k2 = node.hash.k2
    this.LENGTH--;
    var lenX = k2.x + 1,
        lenY = k2.y + 1;
    for (var j = k1.x; j < lenX; ++j) {
        var x = j << 16;
        for (var i = k1.y; i < lenY; ++i) {


            var ke = this._getKey(x, i);

            this.DATA[ke].delete(node._HashID)
        }

    }
}
Grid.prototype.toArray = function (array, bounds) {
    if (this.LENGTH <= 0) return;
    var hsh = {};

    this._get(bounds, function (cell) {

        cell.forEach(function (obj, i) {
            if (hsh[i]) return
            hsh[i] = true;
            array.push(obj);

        })
        return true;
    })
}
Grid.prototype.every = function (bounds, call) {
    if (this.LENGTH <= 0) return;
    var hsh = {};

    this._get(bounds, function (cell) {

        return cell.every(function (obj, i) {
            if (hsh[i]) return true;
            hsh[i] = true;
            return call(obj);

        })
    })
}
Grid.prototype.forEach = function (bounds, call) {

    if (this.LENGTH <= 0) return;
    var hsh = {};

    this._get(bounds, function (cell) {

        cell.forEach(function (obj, i) {
            if (hsh[i]) return;
            hsh[i] = true;
            call(obj);

        })
        return true;
    })
}

function HashBounds(power, lvl, max, minc) {

    this.INITIAL = power;
    this.LVL = lvl;
    this.MAX = max;
    this.MINC = minc || 0;
    this.MIN = power + 1;
    this.LEVELS = []
    this.lastid = 0;
    this.createLevels()
    this.SQRT = [];
    this.setupSQRT()
}
HashBounds.prototype.setupSQRT = function () {
    for (var i = 0; i < 255; ++i) {
        this.SQRT.push(Math.floor(Math.sqrt(i)))
    }
}
HashBounds.prototype.createLevels = function () {
    this.LEVELS = [];

    var last = false
    for (var i = this.LVL - 1; i >= 0; --i) {
        var a = this.INITIAL + i;

        var grid = new Grid(a, i, this.MAX >> a, this.MINC >> a, last)
        this.LEVELS[i] = grid;
        last = grid;
    }

}
HashBounds.prototype.clear = function () {
    this.createLevels();
}
HashBounds.prototype.update = function (node) {
    this.delete(node)
    this.insert(node)
}
HashBounds.prototype.insert = function (node) {
    if (node.hash) throw "ERR: A node cannot be already in a hash!"
    var bounds = node.bounds;
    node.hash = {}
    if (!node._HashID) node._HashID = ++this.lastid;
    if (node._HashSize == node.bounds.width + node.bounds.height) {
        this.LEVELS[node._HashIndex].insert(node);
        return;
    }

    var index = this.SQRT[(node.bounds.width + node.bounds.height) >> this.MIN]
    if (index >= this.LVL) index = this.LVL - 1;

    node._HashIndex = index;
    node._HashSize = node.bounds.width + node.bounds.height;
    this.LEVELS[index].insert(node);
    //for (var i = 0; i < len; ++i) {
    //   if (this.LEVELS[len - i - 1].insert(node)) break;
    //}
}


HashBounds.prototype.delete = function (node) {
    if (!node.hash) throw "ERR: Node is not in a hash!"
    this.LEVELS[node.hash.level].delete(node)
    node.hash = null;
}
HashBounds.prototype.toArray = function (bounds) {
    var array = [];
    for (var i = 0; i < this.LEVELS.length; i++) {
        this.LEVELS[i].toArray(array, bounds)
    }
    return array;
}
HashBounds.prototype.every = function (bounds, call) {
    for (var i = 0; i < this.LEVELS.length; i++) {
        if (!this.LEVELS[i].every(bounds, call)) return false;
    }
    return true;
}
HashBounds.prototype.forEach = function (bounds, call) {
    for (var i = 0; i < this.LEVELS.length; i++) {
        this.LEVELS[i].forEach(bounds, call)
    }
}
var Hash = new HashBounds(4,4,150)
var obj = {
 bounds: {
 x: Math.floor(Math.random() * 100),
   y: Math.floor(Math.random() * 100),
   width: Math.floor(Math.random() * 49),
   height: Math.floor(Math.random() * 49)
   
 }
  
}
Hash.insert(obj)

obj.x = Math.floor(Math.random() * 100)
obj.y = Math.floor(Math.random() * 100)
var obj2 = {
 bounds: {
 x: Math.floor(Math.random() * 100),
   y: Math.floor(Math.random() * 100),
   width: Math.floor(Math.random() * 49),
   height: Math.floor(Math.random() * 49)
   
 }
  
}
Hash.insert(obj2)

obj2.x = Math.floor(Math.random() * 100)
obj2.y = Math.floor(Math.random() * 100)
var obj3 = {
 bounds: {
 x: Math.floor(Math.random() * 100),
   y: Math.floor(Math.random() * 100),
   width: Math.floor(Math.random() * 49),
   height: Math.floor(Math.random() * 49)
   
 }
  
}
Hash.insert(obj3)

Tests:

Insert
Hash.insert({ bounds: { x: Math.floor(Math.random() * 100), y: Math.floor(Math.random() * 100), width: Math.floor(Math.random() * 49), height: Math.floor(Math.random() * 49) } })
Update
Hash.update(obj)
delete-insert
Hash.delete(obj2) Hash.insert(obj2)
forEach()
Hash.forEach(obj3,function(obj) { })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Insert
Update
delete-insert
forEach()

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Browser/OS: Chrome 56 on Mac OS X 10.12.3

View result in a separate tab

Test name	Executions per second
Insert	252365.6 Ops/sec
Update	4493.2 Ops/sec
delete-insert	12871.9 Ops/sec
forEach()	11.4 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):

LLMs can make mistakes. Check important info.

Based on the provided benchmark data, I will analyze and summarize the results.

**Benchmark Results:**

1. **Insert**: Chrome 56, Mac OS X 10.12.3, 252365.609375 executions per second
2. **delete-insert**: Chrome 56, Mac OS X 10.12.3, 12871.9140625 executions per second
3. **Update**: Chrome 56, Mac OS X 10.12.3, 4493.22314453125 executions per second
4. **forEach()**: Chrome 56, Mac OS X 10.12.3, 11.390603065490723 executions per second

**Key Observations:**

* The `Insert` test yields the highest number of executions per second, indicating that the insertion operation is relatively fast.
* The `delete-insert` test has a lower number of executions per second compared to `Insert`, suggesting that deleting and inserting an object may be slower due to additional overhead or memory management issues.
* The `Update` test is significantly slower than the other tests, implying that updating an existing object might require more computations or memory accesses.
* The `forEach()` test has the lowest number of executions per second, indicating that iterating over objects using this method is relatively slow.

**Conclusion:**

Based on these benchmark results, it appears that:

* Insertion operations are relatively fast (Insert test).
* Deleting and inserting an object can be slower due to additional overhead (delete-insert test).
* Updating existing objects might require more computations or memory accesses, making the Update test slower.
* Iterating over objects using the `forEach()` method is relatively slow.

Related benchmarks:

HashBounds (version: 0)

Comparing performance of: Insert vs Update vs delete-insert vs forEach()

Created: 7 years ago by: Guest

Jump to the latest result

Insert

Update

delete-insert

forEach()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):