关于线程执行耗时问题

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace new爬虫
{
    public partial class 采集 : Form
    {
        public static 采集 main;
        public string resultToken;
        public static string content = "";
        public static int maxThread = 10;
        public static int minThread = 10;

        delegate void SetTextCallback(string text);
        
        public 采集()
        {
            InitializeComponent();
            this.richTextBox1.Text = "采集初始化成功.";
            this.textBox执行次数.Text = "100";
            this.textBox最大线程数.Text = "10";
            this.textBox最小线程数.Text = "10";
            Helper.fileToString();
            main = this;

        }
        /// <summary>
        /// 开始采集
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {

            for (int i = 0; i < 1; i++)
            {
                ThreadStart threadStart = new ThreadStart(upload);//通过ThreadStart委托告诉子线程执行什么方法　　
                Thread thread = new Thread(threadStart);
                thread.Start();//启动新线程
            }

            #region 线程池测试
            //int min, max, count;
            //try
            //{
            //    min = int.Parse(this.textBox最小线程数.Text);
            //    max = int.Parse(this.textBox最大线程数.Text);
            //    count = int.Parse(this.textBox执行次数.Text);
            //}
            //catch { MessageBox.Show("数据格式输入非整数");return; }
            //ThreadPool.SetMinThreads(min, min);
            //ThreadPool.SetMaxThreads(max, max);


            //for (int i = 1; i <= int.Parse(this.textBox执行次数.Text); i++)
            //{
            //    ThreadPool.QueueUserWorkItem(new WaitCallback(upload), content);
            //}
            #endregion
        }
        /// <summary>
        /// 上传
        /// </summary>
        /// <param name="obj"></param>
        private static void upload(object obj)
        {
            httplogin.HttpHelper(obj.ToString());
          

        }
        private static void upload()
        {
            httplogin.HttpHelper("");


        }


        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="info"></param>
        public void addLog(string info)
        {
            this.richTextBox1.Text = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss ") + info + "\n" + this.richTextBox1.Text;
        }
        public void SetText(string text)
        {
            //子线程睡眠1秒
            //Thread.Sleep(1000);
            if (this.richTextBox1.InvokeRequired)
            {
                SetTextCallback d = new SetTextCallback(SetText);
                this.Invoke(d, new object[] { text });
            }
            else
            {
                this.richTextBox1.Text = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss ") + text + "\n" + this.richTextBox1.Text;
                this.richTextBox1.Refresh();
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.richTextBox1.Text = "";
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace new爬虫
{
    public class httplogin
    {
        /// <summary>
        /// Token
        /// </summary>
        public static string Token;
        public static string url;


        /// <summary>
        /// 登录
        /// </summary>
        public static async void HttpHelper(string resultJson)
        {
            采集.main.SetText(Thread.CurrentThread.ManagedThreadId.ToString() + "号线程开启");
            Helper.AddLogMsg("上传线程开启时间", "当前线程号：" + Thread.CurrentThread.ManagedThreadId);

            //记录开始时间

            DateTime start= DateTime.Now;           

            HttpResponseMessage responseMessage = new HttpResponseMessage();
            HttpClient httpClient = new HttpClient();

            
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Token);


            HttpContent httpContent = new StringContent(resultJson);
            httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
            string result = "";
            HttpResponseMessage httpResponseMessage = new HttpResponseMessage() ;
            try
            {
                start = DateTime.Now;
                httpResponseMessage = await httpClient.PostAsync(url, httpContent);
                
                if (httpResponseMessage != null && responseMessage.IsSuccessStatusCode && responseMessage.StatusCode == HttpStatusCode.OK)
                {
                    result = "上传成功";
                    //成功的逻辑处理
                    //Helper.AddLogMsg("上传成功", "当前线程号：" + Thread.CurrentThread.ManagedThreadId);

                }
                else
                {
                    result = "上传失败";
                    //Helper.AddLogMsg("上传失败", "当前线程号：" + Thread.CurrentThread.ManagedThreadId);
                }
               
            }
            catch {
               /* Helper.AddLogMsg("上传失败", "当前线程号：" + Thread.CurrentThread.ManagedThreadId);*/ result = "上传失败";
            }
            finally
            {
                httpResponseMessage.Dispose();
                httpClient.Dispose();
                responseMessage.Dispose();
            }
           //记录接触时间
            var interval = (DateTime.Now - start).TotalMilliseconds;
            采集.main.SetText(Thread.CurrentThread.ManagedThreadId.ToString() + "号线程结束  耗时： " + interval + "ms " + result+"  ");
            Helper.AddLogMsg("上传线程关闭时间", "当前线程号：" + Thread.CurrentThread.ManagedThreadId + " \r\n 耗时:" + interval + "ms \r\n " + result + "\r\n url:"+ url);
        }
        /// <summary>
        /// 执行时间
        /// </summary>
        /// <returns></returns>
        //private static string dealTime()
        //{

        //}
    }
}

这是两个主要的逻辑代码  对于运行结果

单线程

线程池

 

关于这个问题 我尝试用了穷举法看到底是什么地方出现了问题  

有以下猜测

1.关于单次执行耗时较少问题 不需要考虑cpu轮转执行片段切换线程 并且创建底层所需要的单例对象 所以第一次耗时相对单线程 较多

2.对于线程池 第一次执行耗时较长 是因为 线程创建耗时 线程轮转切换耗时 底层创建单例静态资源块忽略（因为被哪一个线程执行 并不确定） 

3.关于线程池里面的线程创建回收线程 是否保存当前线程块的资源 尚不确定（存在疑问 大佬可以帮忙解释一下）

4.不存在线程池的回收线程的线程都将被销毁

124已被猜想证实  3回收线程 尚未查到