groenroos
commented
2 years ago Seems like at least superficially, bun run index.js works seamlessly as a drop-in replacement for Node.js, as-is.
However, while Bun may have a 100ms speed advantage on spinning up the client, the difference in response performance according to wrk seems to be equivalent within margin of error / slightly worse;
node index
Running 30s test @ http://127.0.0.1:4000
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 116.77ms 15.91ms 276.52ms 91.44%
Req/Sec 174.41 82.85 333.00 66.75%
61820 requests in 30.09s, 673.05MB read
Socket errors: connect 155, read 220, write 0, timeout 0
Requests/sec: 2054.44
Transfer/sec: 22.37MB
Running 30s test @ http://127.0.0.1:4000/data/updates
12 threads and 200 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 159.77ms 21.25ms 374.55ms 92.27%
Req/Sec 110.67 44.26 161.00 53.68%
36033 requests in 30.10s, 345.10MB read
Socket errors: connect 0, read 81, write 0, timeout 0
Requests/sec: 1197.02
Transfer/sec: 11.46MBbun run index.js
Running 30s test @ http://127.0.0.1:3000
12 threads and 400 connectiit ons
Thread Stats Avg Stdev Max +/- Stdev
Latency 122.75ms 21.82ms 360.02ms 92.76%
Req/Sec 165.20 80.58 333.00 72.30%
58789 requests in 30.10s, 640.61MB read
Socket errors: connect 155, read 101, write 0, timeout 0
Requests/sec: 1953.20
Transfer/sec: 21.28MB
Running 30s test @ http://127.0.0.1:3000/data/updates
12 threads and 200 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 165.74ms 21.95ms 357.85ms 92.46%
Req/Sec 105.26 46.23 161.00 56.71%
34720 requests in 30.10s, 332.23MB read
Socket errors: connect 0, read 84, write 0, timeout 0
Requests/sec: 1153.45
Transfer/sec: 11.04MBI tried to create a bundle to see if it improved things any, but the bun bun app.js command just seemed to hang indefinitely.
In conclusion, seems like no work is needed to support Bun for users who wish to use it, but there doesn't seem to be any immediately obvious low-hanging performance advantage for us here.
Closing the issue for now - but open to reopening if there is new info in the future.
Bun is a JS runtime that claims to be a (near?) drop-in replacement for Node, but with faster performance.
Investigate the extent of the performance benefit to this project. If it is as fast as they claim, find out what, if anything, must be done to support it.