February 2019 – Records And Memorys

下载地址

https://www.quartz-scheduler.net/documentation/quartz-2.x/tutorial/crontrigger.html

我下载的是 Quartz.NET-3.0.7
然后引用 Quartz.NET-3.0.7\bin\Release\Quartz\net452\Quartz.dll
具体用法：

以下是一个可以运行的例子，come from

https://www.quartz-scheduler.net/documentation/quartz-2.x/tutorial/using-quartz.html

但是，在原来的基础上，需要做修改，最终代码为

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Quartz;
using Quartz.Impl;
using Quartz.Core;
using System.Collections.Specialized;
using System.Threading;
using System.Threading.Tasks;


namespace crontriggercS
{

    public class HelloJob : IJob
    {
        public Task Execute(IJobExecutionContext context)
        {
            Console.WriteLine("HelloJob is executing.");
            return null;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // construct a scheduler factory
            ISchedulerFactory schedFact = new StdSchedulerFactory();

            // get a scheduler
            IScheduler sched =  schedFact.GetScheduler().GetAwaiter().GetResult();
            sched.Start();

            // define the job and tie it to our HelloJob class
            IJobDetail job = JobBuilder.Create<HelloJob>()
                .WithIdentity("myJob", "group1")
                .Build();

            // Trigger the job to run now, and then every 40 seconds
            ITrigger trigger = TriggerBuilder.Create()
              .WithIdentity("myTrigger", "group1")
              .StartNow()
              .WithSimpleSchedule(x => x
                  .WithIntervalInSeconds(10)
                  .RepeatForever())
              .Build();

            sched.ScheduleJob(job, trigger);
            Console.ReadLine();
        }
    }
}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Quartz;

using Quartz.Impl;

using Quartz.Core;

using System.Collections.Specialized;

using System.Threading;

using System.Threading.Tasks;

namespace crontriggercS

{

public class HelloJob : IJob

{

public Task Execute(IJobExecutionContext context)

{

Console.WriteLine("HelloJob is executing.");

return null;

}

class Program

{

static void Main(string[] args)

{

// construct a scheduler factory

ISchedulerFactory schedFact = new StdSchedulerFactory();

// get a scheduler

IScheduler sched = schedFact.GetScheduler().GetAwaiter().GetResult();

sched.Start();

// define the job and tie it to our HelloJob class

IJobDetail job = JobBuilder.Create<HelloJob>()

.WithIdentity("myJob", "group1")

.Build();

// Trigger the job to run now, and then every 40 seconds

ITrigger trigger = TriggerBuilder.Create()

.WithIdentity("myTrigger", "group1")

.StartNow()

.WithSimpleSchedule(x => x

.WithIntervalInSeconds(10)

.RepeatForever())

.Build();

sched.ScheduleJob(job, trigger);

Console.ReadLine();

}

修改了这句：

IScheduler sched =  schedFact.GetScheduler().GetAwaiter().GetResult();

1	IScheduler sched = schedFact.GetScheduler().GetAwaiter().GetResult();

原来的版本是：

IScheduler sched = schedFact.GetScheduler();

1	IScheduler sched = schedFact.GetScheduler();

编译不通过

此外， job 的返回值也要改为 Task

job datamap 用来传递给job的参数

cronTrigger的表达式

Cron Expressions

Cron-Expressions are used to configure instances of CronTrigger. Cron-Expressions are strings that are actually made up of seven sub-expressions, that describe individual details of the schedule. These sub-expression are separated with white-space, and represent:

1. Seconds
1. Minutes
1. Hours
1. Day-of-Month
1. Month
1. Day-of-Week
1. Year (optional field)

a) 每三分钟

0 */3 * * * ?

1	0 /3 * * ?

b) 非周末的每2小时（hour 1,3,5…）, 从凌晨1点开始

0 0 1/2 ? * MON,TUE,WED,THU,FRI

1	0 0 1/2 ? * MON,TUE,WED,THU,FRI

c) 所有天的每2小时

0 0 1/2 ? * ?

1	0 0 1/2 ? * ?

e) 周末的每2小时

0 0 1/2 ? * SAT,SUN

1	0 0 1/2 ? * SAT,SUN

purpose :

测速，测网络连接

安装

windows 去这里下载：

https://iperf.fr/iperf-doc.php

1	https://iperf.fr/iperf-doc.php

centos 7 :

sudo yum install iperf3

1	sudo yum install iperf3

centos 6 32bit

How to know centos is 32 bit or 64 bit

uname -m

uname -m

在 centos 6 的安装步骤是：

先安装 epel-release repository

sudo rpm -e epel-release

1	sudo rpm -e epel-release

sudo yum install epel-release

1	sudo yum install epel-release

然后再安装 iperf3

sudo yum install iperf3

1	sudo yum install iperf3

此方法来自 https://unix.stackexchange.com/questions/165916/trying-to-enable-epel-on-centos-6-and-it-wont-show-in-repolist

在服务器端暂时关掉防火墙

on server side

iperf3 -s

iperf3 -s

开启一个端口监听

on client side

iperf3 -u -c 192.168.3.116 5201 -t 60 -i 2 -b 100M

1	iperf3 -u -c 192.168.3.116 5201 -t 60 -i 2 -b 100M

参数介绍：

-u : UDP

-c : server ip and port

-t : 测多久

-i : 显示的interval

如果不带 -u , 就是tcp 连接

-b: 指定带宽 100M

reference :

http://www.slyar.com/blog/iperf-measure-network-performance.html

Month: February 2019

Every week And every day

cronTrigger 的用法

Cron Expressions

如何测量真实网速— iperf introduce