Benchmark: moment date sort 2

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var _sortMomentDates = (a, b) => {
    if (a.isSame(b)) {
        return 0;
    }

    return a.isBefore(b) ? -1 : 1;
};

var _sortDateValues = (a, b) => b - a;

var sortMomentDates = _.memoize(_sortMomentDates, (...args) => args.map(v => v.format('MM/DD/YYYY')).join("_"));
var sortDateValues = _.memoize(_sortDateValues, (a, b) => BigInt(a) << 17n | BigInt(b));

var rawDates = [{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"},{"startDate":"2020-06-01","endDate":"2020-06-30"},{"startDate":"2020-07-01","endDate":"2020-07-31"},{"startDate":"2020-08-01","endDate":"2020-08-31"},{"startDate":"2020-09-01","endDate":"2020-09-30"},{"startDate":"2020-10-01","endDate":"2020-10-31"},{"startDate":"2020-11-01","endDate":"2020-11-30"},{"startDate":"2020-12-01","endDate":"2020-12-31"},{"startDate":"2020-02-01","endDate":"2020-02-29"},{"startDate":"2020-03-01","endDate":"2020-03-31"},{"startDate":"2020-04-01","endDate":"2020-04-30"},{"startDate":"2020-05-01","endDate":"2020-05-31"}];

var momentDates = rawDates.map(e => moment(e.startDate));
var dateValues = momentDates.map(x => 10000 * x.year() + 100 * x.month() + x.date());

Tests:

no memoization
var sortedDates = momentDates.sort(_sortMomentDates);
with memoization
var sortedDates = momentDates.sort(sortMomentDates);
with memoization (integer)
var sortedDates = dateValues.sort(sortDateValues);
no memoization (integer)
var sortedDates = dateValues.sort(_sortDateValues);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
no memoization
with memoization
with memoization (integer)
no memoization (integer)

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll do my best to analyze the provided data and provide an answer.

**Benchmark Results Analysis**

The latest benchmark results show variations in execution speed for different test cases:

1. **No Memoization (Integer)**: Chrome 80 on Windows, desktop platform, with an execution speed of 506,111.25 executions per second.
2. **No Memoization**: Same as above, but without specifying the device platform or operating system, with an execution speed of 195,710.84 executions per second.
3. **With Memoization (Integer)**: Chrome 80 on Windows, desktop platform, with an execution speed of 16,031.83 executions per second.
4. **With Memoization**: Same as above, but without specifying the device platform or operating system, with an execution speed of 5,549.17 executions per second.

**Observations**

* The "no memoization" test cases show significant variations in execution speed (up to 2.6x difference), suggesting that memoization has a substantial impact on performance.
* The "with memoization" test cases exhibit relatively stable execution speeds, indicating that memoization leads to consistent and efficient performance.
* The lack of specific device platform or operating system information for some benchmark results makes it challenging to draw conclusions about the impact of these factors on performance.

**Question**

Based on these benchmark results, can you infer anything about the optimization techniques used in the code (e.g., whether memoization is effective)?

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.116 Safari/537.36

Browser/OS: Chrome 80 on Windows

View result in a separate tab

Test name	Executions per second
no memoization	195710.8 Ops/sec
with memoization	5549.2 Ops/sec
with memoization (integer)	16031.8 Ops/sec
no memoization (integer)	506111.2 Ops/sec

Related benchmarks:

moment date sort 2 (version: 0)

Comparing performance of: no memoization vs with memoization vs with memoization (integer) vs no memoization (integer)

Created: 4 years ago by: Guest

Jump to the latest result

no memoization

with memoization

with memoization (integer)

no memoization (integer)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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