Benchmark: Lodash isEqual test with big objects

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

// 3 levels deep
window.foo3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 4 } } };


//
window.test1 = {
    "traffic": "POPUP",
    "targeting": {
        "BASE": {
            "adultFilters": [
                "ADULT",
                "NON_ADULT"
            ],
            "deviceFilters": {
                "devices": [
                    "MOBILE"
                ],
                "networks": {
                    "type": "ALL"
                },
                "desktopOses": [],
                "mobileOses": [
                    {
                        "os": "ANDROID_PHONE",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "IOS_TABLET",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "OTHER",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "ANDROID_TABLET",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "IOS_PHONE",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    }
                ],
                "desktopBrowsers": [],
                "mobileBrowsers": [
                    "FACEBOOK",
                    "FIREFOX",
                    "CHROME",
                    "SAFARI",
                    "OPERA",
                    "UC_BROWSER",
                    "ANDROID",
                    "OTHER",
                    "SAMSUNG"
                ]
            }
        },
        "GEO": {
            "country": {
                "code": "US"
            }
        }
    }
}
window.test2 = {
    "traffic": "POPUP",
    "targeting": {
        "BASE": {
            "adultFilters": [
                "ADULT",
                "NON_ADULT"
            ],
            "deviceFilters": {
                "devices": [
                    "MOBILE"
                ],
                "networks": {
                    "type": "ALL"
                },
                "desktopOses": [],
                "mobileOses": [
                    {
                        "os": "ANDROID_PHONE",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "IOS_TABLET",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "OTHER",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "ANDROID_TABLET",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    },
                    {
                        "os": "IOS_PHONE",
                        "version": {
                            "min": "MIN",
                            "max": "MAX"
                        }
                    }
                ],
                "desktopBrowsers": [],
                "mobileBrowsers": [
                    "FACEBOOK",
                    "FIREFOX",
                    "CHROME",
                    "SAFARI",
                    "OPERA",
                    "UC_BROWSER",
                    "ANDROID",
                    "OTHER",
                    "SAMSUNG"
                ]
            }
        },
        "GEO": {
            "country": {
                "code": "US"
            }
        }
    }
}

Tests:

_.isEqual Level 3
_.isEqual(window.foo3, window.bar3)
JSON.stringify Level 3
JSON.stringify(window.foo3) === JSON.stringify(window.bar3);
object test
_.isEqual(window.test1, window.test2)

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

JSON.stringify Level 3

3.2M/s

_.isEqual Level 3

987K/s

object test

180K/s

Fastest: JSON.stringify Level 3 (18.1x faster)

View exact numbers

✓ JSON.stringify Level 3: 3,248,527 ops/sec
• _.isEqual Level 3: 986,592 ops/sec
• object test: 179,739 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual Level 3
JSON.stringify Level 3
object test

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser/OS: Chrome 138 on Mac OS X 10.15.7

View result in a separate tab

JSON.stringify Level 3

6.6M/s

_.isEqual Level 3

1.3M/s

object test

186K/s

View exact numbers

Test name	Executions per second
✓ JSON.stringify Level 3	6,630,256 Ops/sec
_.isEqual Level 3	1,281,163 Ops/sec
object test	186,475 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to measure the performance of two functions: `_.isEqual` from Lodash and the custom implementation using JSON string comparison. The test cases are created to compare objects with different structures, including nested objects.

**Test Cases**

There are three test cases:

1. **_.isEqual Level 3**: This test case compares two objects at depth 3 (`window.foo3` and `window.bar3`). These objects have the same structure, but their values are slightly different.
2. **JSON.stringify Level 3**: This test case uses JSON stringification to compare the objects. It converts both objects to strings and then compares them for equality.
3. **object test**: This test case compares two objects (`window.test1` and `window.test2`) that have a similar structure, but with some differences.

**Lodash Library**

The Lodash library is used in the first test case (`_.isEqual Level 3`). Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, object manipulation, and more. In this case, `_.isEqual` is used to compare two objects for equality.

**JSON Stringification**

The second test case uses JSON stringification to compare the objects. This method converts both objects to strings using the `JSON.stringify()` function and then compares them for equality.

**Custom Implementation**

The third test case uses a custom implementation to compare the objects. Instead of using Lodash's `_.isEqual`, it directly compares the objects using the `===` operator.

**Benchmark Results**

The latest benchmark results show that:

* The `_.isEqual Level 3` test case is the slowest, with an execution rate of approximately 1770133.75 executions per second.
* The `JSON.stringify Level 3` test case is faster, with an execution rate of approximately 932815.8125 executions per second.
* The `object test` is the fastest, with an execution rate of approximately 170903.03125 executions per second.

Overall, the results suggest that using Lodash's `_.isEqual` function is slower than the custom implementation and JSON stringification for deep object comparisons. However, the differences are relatively small, and the choice of approach may depend on specific use cases and performance requirements.

Lodash isEqual test with big objects (version: 0) Benchmark.js

Test on isEqual performance

Comparing performance of: `_.isEqual Level 3 vs JSON.stringify Level 3 vs object test`

Created: 4 years ago by: Guest

Go to the latest result

_.isEqual Level 3

JSON.stringify Level 3

object test

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Lodash isEqual test with big objects (version: 0) Benchmark.js

Test on isEqual performance

Comparing performance of: _.isEqual Level 3 vs JSON.stringify Level 3 vs object test

Created: 4 years ago by: Guest

Go to the latest result

_.isEqual Level 3

JSON.stringify Level 3

object test

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `_.isEqual Level 3 vs JSON.stringify Level 3 vs object test`