PMP,全称是Percona Monitoring Plugins,是Percona公司为MySQL监控写的插件.支持Nagios,Cacti.从PMP 1.1开始,支持Zabbix. 下面,看看如何在Zabbix上安装PMP. 配置Zabbix Agent 下载PMP 下载地址:https://www.percona.com/downloads/percona-monitoring-plugins/ 因为我的Linux版本是RHEL 6.7,故选择RPM包 # wget https://www…

传送门:http://acm.hdu.edu.cn/showproblem.php?pid=5920 我们的思路是: 对于一个串s,先根据s串前一半复制到后一半构成一个回文串, 如果这个回文串比s小,则做减法并递归: 如果相等直接结束: 如果大,那么找前一半离中心最近的一个非零数减1,并把这位之后到中心的数全都变为9,例如11000->11011,大了,所以变成10901: ps:因为大数相减要传指针参数,调了蛮久,发现指针的乱指了,所以开了一个二维数组,每一次算出的原串和回文串都用新的指针,也…

https://bugs.launchpad.net/percona-toolkit/+bug/1320168 We use the pt-pmp (a variety for pmp !http://poormansprofiler.org/! by Percona ) tool a lot to analyze our online MySQL problem. But when we execute the pmp, we have found  tps/qps of mysqld dro…

一个是设备坐标,一个是逻辑坐标,两者是不同的. px是个相对单位,一般像素的参考值为:在一个像素密度是90 pdi的显示器上,正常人从距离显示器28英寸处看一个像素的视角应该不小于0.0227度. 1   px定义的在设置为大字体之后不会变:pt定义的会变 2   px是相对单位,pt是绝对单位 如果大家做网页是为了浏览而不是印刷,建议大家用 px 来定义字号,理由如下: 1. 如前面 Jet 所述,px 指的是象数,象数这个概念本身就是为了显示才引用的,而 pt (磅值)很大程度上是为了印刷不…

MAX Average Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7639    Accepted Submission(s): 1667 Problem Description Consider a simple sequence which only contains positive integers as a…

3212: Pku3468 A Simple Problem with Integers Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 1053  Solved: 468[Submit][Status][Discuss] Description You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of opera…

Problem Description "Yakexi, this is the best age!" Dong MW works hard and get high pay, he has many 1 Jiao and 5 Jiao banknotes(纸币), some day he went to a bank and changes part of his money into 1 Yuan, 5 Yuan, 10 Yuan.(1 Yuan = 10 Jiao) "…

abstract: V const & a 加速 F. Mirror 题意 链接 问题: 有n个人在y=0的平面上(及xoz平面).z=0平面上有一面镜子(边平行于坐标轴).z=a平面上有q个点(保证a大于所有人的z坐标). 所有人面朝镜子,且在镜子和q个点之间(即每个人的z坐标保证0<z<a). 问对于某个点,让所有人能够通过镜子看到那个点的镜子的最小面积. 题解 三维几何+镜像+凸包 首先考虑镜面,我们可以通过(初中科学的)镜面反射原理,关于z=0做出z=a的对称平面z=-a.问题…

Problem F. Finance 题目连接: http://codeforces.com/gym/100714 Description The Big Boss Company (BBC) principal is going to prepare a vacation schedule for the next year. Each employee of BBC gets a four-week vacation each year. A vacation can be divided…

1. Increasing resources on the critical path activities may not always shorten the length of the project with the following reasons or examples .which may bring the LEAST influence to resource increase ? A certain activities are time dependent rather…