Go vs Bun Benchmark

bench.sh

echo "\n\n# Benchmarking Golang"
go build main.go
./main &
PID=$!
sleep 2
bombardier --fasthttp -c 100 -n 10000 http://127.0.0.1:8000/
ps -o pid,ppid,pcpu,pmem,command -p $PID
# Thread count
echo "Threads: $(ps -M $PID | grep -v USER | wc -l)" 
kill $PID

echo "\n\n# Benchmarking Bun"
bun run index.ts &
PID=$!
sleep 2
bombardier --fasthttp -c 100 -n 10000 http://127.0.0.1:8000/
ps -o pid,ppid,pcpu,pmem,command -p $PID
# Thread count
echo "Threads: $(ps -M $PID | grep -v USER | wc -l)" 
kill $PID

index.ts

var buffer = new Buffer(1024*1024);
for (var i = 0; i < buffer.length; i++)
  buffer[i] = 100;

Bun.serve({
    port: 8000,
    fetch(req) {
        return new Response(buffer, { headers: { 'Content-Type': 'text/plain' } })
    }
})

console.log('Server running at http://127.0.0.1:8000/');

main.go

package main

import (
	"log"
	"net/http"
)

func main() {
	bytes := make([]byte, 1024*1024)
	for i, _ := range bytes {
		bytes[i] = 100
	}

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write(bytes)
	})

	log.Println("Server running at http://127.0.0.1:8000/")
	http.ListenAndServe(":8000", nil)
}