fix: set GOMAXPROCS to optimize performance (#16)

Signed-off-by: Yusan Kurban <[email protected]>

main.go

@@ -5,7 +5,7 @@ Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
-    http://www.apache.org/licenses/LICENSE-2.0
+	http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
@@ -17,6 +17,8 @@ package main
 
 import (
 	"os"
+	"runtime"
+	"strconv"
 
 	"github.com/go-logr/logr"
 	apiserver "k8s.io/apiserver/pkg/server"
@@ -29,11 +31,22 @@ import (
 )
 
 func main() {
+	setMaxProcs()
 	if err := runWebhookCmd(); err != nil {
 		os.Exit(1)
 	}
 }
 
+func setMaxProcs() {
+	s := os.Getenv("CPUS")
+	f, err := strconv.ParseFloat(s, 64)
+	if err != nil || f < 1 {
+		f = 1
+	}
+
+	runtime.GOMAXPROCS(int(f))
+}
+
 func runWebhookCmd() error {
 	logs.InitLogs()
 	defer logs.FlushLogs()