Params性能探索

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Profiling;


namespace MyTest
{

    public class TestParamsObject : MonoBehaviour
    {
        public int TestCount = 10000;

        void Start()
        {

        }

        void Update()
        {
            Profiler.BeginSample("CastInt");
            for (int i = 0; i < TestCount; i++)
                CastInt(1);

            Profiler.EndSample();

            Profiler.BeginSample("CastString");
            for (int i = 0; i < TestCount; i++)
                CastString("a");
            Profiler.EndSample();

            Profiler.BeginSample("CastObject");
            for (int i = 0; i < TestCount; i++)
                CastObject(this);
            Profiler.EndSample();

            Profiler.BeginSample("NoCastInt");
            for (int i = 0; i < TestCount; i++)
                NoCastInt(1);
            Profiler.EndSample();

            Profiler.BeginSample("NoCastString");
            for (int i = 0; i < TestCount; i++)
                NoCastString("a");
            Profiler.EndSample();

            Profiler.BeginSample("NoCastObject");
            for (int i = 0; i < TestCount; i++)
                NoCastObject(this);
            Profiler.EndSample();
        }

        void CastInt(params object[] args)
        {
            int a = (int)args[0];
        }

        void CastString(params object[] args)
        {
            string b = (string)args[0];
        }

        void CastObject(params object[] args)
        {
            TestParamsObject c = (TestParamsObject)args[0];
        }

        void NoCastInt(int arg)
        {
            int a = arg;
        }

        void NoCastString(string arg)
        {
            string a = arg;
        }

        void NoCastObject(TestParamsObject arg)
        {
            TestParamsObject a = arg;
        }
    }
}

params虽然好用，但是GC很高啊，每帧10W次调用，就有数M的GC，可怕，性能也堪忧， 相对于正常的传值和传引用，执行时间大概是20倍到40倍的差距，还是少用params吧。
而且int的类型转换GC高，执行时间长，盲猜是因为装箱拆箱的问题导致的。

标签：探索,int,性能,Profiler,TestCount,Params,BeginSample,arg,void
来源： https://blog.csdn.net/xp406181/article/details/121788228