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https://github.com/drwpow/node-dom-parse-benchparks
https://github.com/drwpow/node-dom-parse-benchparks
Last synced: 9 days ago
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- Host: GitHub
- URL: https://github.com/drwpow/node-dom-parse-benchparks
- Owner: drwpow
- Created: 2021-10-16T03:35:52.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2021-10-16T05:00:31.000Z (about 3 years ago)
- Last Synced: 2024-10-15T00:31:01.587Z (2 months ago)
- Language: JavaScript
- Size: 16.6 KB
- Stars: 1
- Watchers: 2
- Forks: 1
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Node.js DOM performance benchmarks
⚠️ **This is a cheap test!** My usecase was parsing a unique document once, and running a query selector once. This is very different from parsing a document once, and running many, many queries on it.
### Methodology
1. Parse a long document (the GitHub.com homepage, © GitHub)
2. Query for a specific element, using whatever the parser has available
3. Repeat 999×
### Results
| Package | Result | Comparison |
| :------------------------------------------------------------- | -------: | :----------: |
| [hypertag](https://npmjs.com/hypertag) | `1.48s` | — |
| [fast-html-parser](https://npmjs.com/fast-html-parser) | `1.63s` | 10% slower |
| [htmlparser2](https://npmjs.com/htmlparser2) | `3.69s` | 149% slower |
| [node-html-parser](https://npmjs.com/node-html-parser) | `5.24s` | 254% slower |
| [sax-wasm](https://npmjs.com/sax-wasm)\* | `10.82s` | 631% slower |
| [cheerio](https://npmjs.com/cheerio) | `22.48s` | 1419% slower |
| [fast-html-dom-parser](https://npmjs.com/fast-html-dom-parser) | `94.48s` | 6284% slower |
| [jsdom](https://npmjs.com/jsdom)\*\* | ??? | |
\*I know what you’re thinking—“why is WASM slower?” Like I said, my methodology here was **parsing a document 1,000×.** WASM has a very expensive startup cost that JS doesn’t. I’m sure that once it’s loaded, it would run circles around everything else. So take these benchmarks with a grain of salt if you’re reusing the same document and not throwing it away each time like I was doing.
\*\* jsdom ran out of memory after taking at least 30 seconds. I didn’t get to benchmark it, but that told me all I needed to know (dunno what run it was on either).