Benchmark: Does the size of the object being assigned affect performance? - updating case (fix)

Tests:

assigning 3 fields
const firstObject = { a: 1, b: '123', c: new Date(), d: 1, e: '456', f: new Date(), g: 1, h: '789', i: [1,2,3], j: 1, k: '101112', l: new Date() } const secondObject = { a: 1, b: '456', c: new Date() } Object.assign(firstObject, secondObject)
assigning 12 fields
const firstObject = { a: 1, b: '123', c: new Date(), d: 1, e: '456', f: new Date(), g: 1, h: '789', i: [1,2,3], j: 1, k: '101112', l: new Date() } const secondObject = { a: 1, b: '456', c: new Date(), d: 1, e: '456', f: new Date(), g: 1, h: '789', i: [1,2,3], j: 1, k: '101112', l: new Date() } Object.assign(firstObject, secondObject)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
assigning 3 fields
assigning 12 fields

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the benchmark.

**Benchmark Purpose:**

The goal of this benchmark is to measure how much performance difference there is between assigning properties to an object with fewer and more properties. This test specifically checks for performance differences when updating cases (i.e., when some properties are already present on the target object).

**Options Compared:**

There are two main approaches being compared:

1. **Assigning 3 fields**: In this case, only a few properties from the `secondObject` are assigned to the `firstObject`. This approach is likely to result in less overhead and fewer operations.
2. **Assigning 12 fields**: Here, all available properties from `secondObject` are assigned to `firstObject`. This scenario is expected to be more resource-intensive.

**Pros and Cons of Each Approach:**

1. **Assigning 3 fields:**
	* Pros:
		+ Less overhead due to fewer assignments.
		+ Fewer operations, resulting in lower computational complexity.
	* Cons:
		+ May not accurately reflect real-world scenarios where objects are typically populated with more properties.
2. **Assigning 12 fields:**
	* Pros:
		+ More representative of typical use cases.
	* Cons:
		+ Increased overhead and operations due to the larger number of assignments.

**Library Used:**

In both benchmark definitions, the `Object.assign()` method is used to assign properties from one object to another. The purpose of this library is to provide a convenient way to transfer multiple values from source objects into a destination object, overriding any existing values in the target object.

**Special JS Feature or Syntax:**

There are no special JavaScript features or syntax being tested in these benchmarks.

**Other Considerations:**

When interpreting benchmark results, consider factors like:

* Number of executions per second: This measures how many times the code is executed within a given time frame.
* Browser and platform: The specific browser and platform used for running the benchmark may affect performance.
* Operating system: The OS used can influence performance due to varying levels of optimization.

**Alternative Benchmarks:**

Some alternative benchmarks that might be relevant to this test include:

* Comparing different assignment methods, such as:
	+ Using a loop instead of `Object.assign()`.
	+ Using the spread operator (`{ ...firstObject, ...secondObject }`) for assignment.
* Evaluating the performance of other object-related operations, like:
	+ Creating and updating large objects.
	+ Performing complex object transformations.
	+ Optimizing object iteration and traversal.

Please note that these alternative benchmarks might not be directly comparable to this specific test.

Related benchmarks:

Does the size of the object being assigned affect performance? - updating case (fix) (version: 0)

Comparing performance of: assigning 3 fields vs assigning 12 fields

Created: 2 years ago by: Guest

Jump to the latest result

assigning 3 fields

assigning 12 fields

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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