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how to customize `show processlist` in mysql?
... from the command line interface, is the pager command.
eg
pager grep -v Sleep | more; show full processlist;
Then you can page through the results.
You can also look for certain users, IPs or queries with grep or sed in this way.
The pager command is persistent per session.
...
Run Cron job every N minutes plus offset
...
You can try: */5 * * * * sleep N; your job
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Bash script to set up a temporary SSH tunnel
... seconds to become available. My solution: while [ ! -e $ctrl_socket ]; do sleep 0.1; done
– Adam Wallner
Feb 11 '18 at 22:19
...
实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...博的网页搜索，可见即可抓的方式，结合反监控系统模块模拟人的正常行为操作，搜索30万关键词数据，使资源最大化利用。为了保证在一个小时采集到，需要采用分布式多线程模式抓取，并发采集。并发的时候不能从同一个ip...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...an not be obtained, a system call has to be performed to put the thread to sleep; that is obviously extremely slow (system calls are in the order of 10 mircoseconds). Normally that is not really a problem because that thread has to sleep anyway-- but it could be a problem with high contention where ...
How to make a Python script run like a service or daemon in Linux
... event loop (where your events are timer triggering, possibly, provided by sleep function).
I wouldn't recommend you to choose 2., because you would be, in fact, repeating cron functionality. The Linux system paradigm is to let multiple simple tools interact and solve your problems. Unless there...
实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... ngx.exit(ngx.HTTP_OK);
end
ngx.sleep(1);
end
ngx.say("YES");
ngx.exit(ngx.HTTP_OK);
';
}
...
}
注：为了处理服务端不知道客户端何时断开连接的情况，代码中引入超时...
Is Disney's FastPass Valid and/or Useful Queue Theory
...ng visitors with some kind of priority queue. They don't block, they don't sleep, they spend money. It works because john uses it at 11:00 AM, joe uses it at 11:15 AM (or 11:01 am). Now, if everyone had a fast pass, the regular line would be much faster while most visitors spent more money on food a...
你不得不知道的6个用好大数据的秘诀 - 资讯 - 清泛网 - 专注C/C++及内核技术
...Downs表示。
秘诀四：用机器代替人工
机器学习指计算机模拟或实现人类的学习行为，以获取新的知识或技能，从而对自身功能进行改进。机器学习相比人工学习，速度更快，学习规模也更大，一个公司能通过机器学习较快地发...
Get Mouse Position
...tring[] args) throws InterruptedException{
while(true){
//Thread.sleep(100);
System.out.println("(" + MouseInfo.getPointerInfo().getLocation().x +
", " +
MouseInfo.getPointerInfo().getLocation().y + ")");
}
}
}
...