https://github.com/bmeurer/async-hooks-performance-impact
Performance impact of async_hooks
https://github.com/bmeurer/async-hooks-performance-impact
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Performance impact of async_hooks
- Host: GitHub
- URL: https://github.com/bmeurer/async-hooks-performance-impact
- Owner: bmeurer
- Created: 2018-01-16T12:15:13.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2018-01-17T18:58:19.000Z (over 8 years ago)
- Last Synced: 2025-05-29T18:33:52.341Z (about 1 year ago)
- Language: JavaScript
- Size: 280 KB
- Stars: 59
- Watchers: 1
- Forks: 5
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Performance impact of async_hooks
- https://github.com/nodejs/diagnostics/issues/124
- https://github.com/nodejs/benchmarking/issues/188
This is a simple demo of the potential performance impact of `async_hooks`
on Promise heavy workloads. This repository contains the popular
[Bluebird](https://github.com/petkaantonov/bluebird) benchmarks and the
so-called *Wikipedia Promise* benchmark with and
without `async_hooks` (running with native promises).
To measure the actual impact there's a version of each benchmark with
an empty `init` hook, i.e. we prepend the following code to the actual
code under test:
```js
const async_hooks = require('async_hooks');
const hook = async_hooks.createHook({
init(asyncId, type, triggerAsyncId) { }
});
hook.enable();
```
We also test with all hooks (i.e. `init`, `before`, `after`, `destroy`
and `promiseResolve`) using the following snippet:
```js
const async_hooks = require('async_hooks');
const hook = async_hooks.createHook({
init(asyncId, type, triggerAsyncId, resource) { },
before(asyncId) { },
after(asyncId) { },
destroy(asyncId) { },
promiseResolve(asyncId) { },
});
hook.enable();
```
## Results
Here the results of running the Promise micro benchmarks with and without
`async_hooks` enabled:
| Benchmark | Node 8.9.4 | Node 9.4.0 |
| ------------------------------:| ----------:| ----------:|
| Bluebird-doxbee (regular) | 226 ms | 189 ms |
| Bluebird-doxbee (init hook) | 383 ms | 341 ms |
| Bluebird-doxbee (all hooks) | 440 ms | 411 ms |
| Bluebird-parallel (regular) | 924 ms | 696 ms |
| Bluebird-parallel (init hook) | 1380 ms | 1050 ms |
| Bluebird-parallel (all hooks) | 1488 ms | 1220 ms |
| Wikipedia (regular) | 993 ms | 804 ms |
| Wikipedia (init hook) | 2025 ms | 1893 ms |
| Wikipedia (all hooks) | 2109 ms | 2124 ms |
And we also ran some more realistic benchmarks, based on `hapi` and
`koa`, with and without `async_hooks` enabled:
| Benchmark | Node 9.4.0 |
| ----------------: | ------------: |
| hapi (asynchooks) | 6026.9 reqs |
| hapi (regular) | 9024.19 reqs |
| koa (asynchooks) | 11508.6 reqs |
| koa (regular) | 12592.55 reqs |
The `koa` benchmark is pretty flaky, so the performance difference could be
within noise and thus not relevant.
## Bluebird benchmarks
The files here are modified from: [https://github.com/petkaantonov/bluebird/tree/master/benchmark](https://github.com/petkaantonov/bluebird/tree/master/benchmark)
The current version is based on `bluebird@c0d4472cecd523c2f9d4805a23d87be3cfe03b41`
## Wikipedia Benchmark
The files here are modified from: [https://github.com/wikimedia/web-stream-util](https://github.com/wikimedia/web-stream-util)
The current version is based on `web-stream-util@fc76740cd6a73dcb044251a233bc3c868d3c9a77`