pt hub

1. Unit of relative css Length Ø font height of em Elements Height of x in ex font Ø px pixel Pixels % Percent Percentage 2. Absolute css length unit Ø in inch Inches (1 inch = 2.54 cm) Ø cm Centimeters Mm millimetre Ø pt point Points (1 point = 1/72 inch) Pc pickup Picas (1 pickup =) 3. Description of the unit em Em indicates the font height. The default font height of any browser is 16 PX. Therefore, the unadjusted browsers all match: 1em = 16px. Th

Label: style blog HTTP color Io OS AR Pt-ioprofile is a percona performance analysis tool that allows you to view process output, input, and print some table files and active Io files. Pt-ioprofile is a read-only tool, so there is no risk for data. Many of your friends have no instructions on installing Pt-ioprofile on the Internet. ^. ^ The following describes h

Pt-kill is a good kill MySQL connection tool, is a part of Percona Toolkit, in the due to more idle connections cause more than the maximum number of connections, a problem of SQL causes MySQL load is high, you need to kill some connections, This tool is mainly used for this purpose. Parameters –busy-time Run time –idle-time Free time –victims All matching connections, with the longest connection –interval Interval time, the default 30s, a bi

Label:Pt-query-digest although powerful, but after all, there is no visual display of the Web interface, we can use Anemometer as the display of pt-query-digest execution results, Anemometer is an open source software developed specifically for MySQL's slow query, with addresses in Http://www.oschina.net/p/anemometer First, install lamp environment1, installation Yum install httpd php *bcmath* *mysqli*- y 2, view [[email protected] ~]# rpm-qa|grep

the high-definition Alliance for central China is now the most popular Http://www.hdstar.orgIdea HDThe series are permanently free of charge. There are too many seeds for free, and it is easy to support the series with high points. This station is also my first PT station to join. Http://bt.ourdvd.net/domestic DVD boss Certificate ------------------------------------------------------------------------------------------------------------------------

MySQL Master/Slave latency monitoring script (pt-heartbeat), mysqlpt-heartbeat We can use percona's powerful weapon pt-heartbeat to monitor the master-slave replication latency of MySQL databases. Pt-heartbeat updates a specific table in the master database by using a timestamp. Then, it reads the updated timestamp from the slave database and compares it with the

#!/bin/bash# run the script needs to change 2 places: The first is the basic information, the second is--alter# basic information (need to change) user= ' xxx ' password= ' xxx ' host= ' xxx ' port= xxxxd= ' xxx ' t= ' xxx ' #--alter (need change) #--------------Example----------------#1. Add Field # pt-online-schema-change--user= $user --password= $password --host= $host --port= $port --alter "Addcolumncontenttext" d= $D, t= $t --no-check-replicatio

The CSS text size units you should know are PX, EM, PT, and csspx.Summary: Here we reference Jorux's article "CSS needs to be rewritten for 95% of Chinese websites". The question is a bit scary, but it is indeed a defect in the production of domestic webpages. I have never been clear about the relationship and features between px and em. I have learned a lot since I saw it. In general, px is used to define the word body ,... 　　 Here we reference Joru

What PT is. I am in the PT download introduction and the PT program source download has been introduced in the article, the simple point is that only download does not upload will let the BT download service. I was the first to see the nexusphp open Source News, and then their own search to the author's Baidu space, see just open source soon, no wonder when I fin

layout, point is an absolute value, which is equal to 1/72 inches, which can be measured by a ruler, in physical inches. But in CSS the meaning of PT is not so. Because our display is divided into pixels, a single pixel can only have one color (in order to simplify, the sub-pixel anti-aliasing technique is not discussed here), to display on the screen, you must first convert the length in PT to the length

You can also use the pt-slave-restart command of percona-toolkit to handle abnormal shutdown of MySQLSlave (pt-slave-restart. The percona-toolkit-2.2.8-1.noarch.rpm needs to install some dependency packages. Yum install perl-DBI perl-DBD-MySQL perl-IO-Socket-SSL perl-Time-HiRes Handle abnormal shutdown simulation 1. JAVA programs are constantly writing to the Master Import java. SQL. Connection ;

The tutorial jQuery was created by John Resig, an American. It has attracted many javascript experts from around the world to join the team, including Jörn Zaefferer from Germany, stefan Petre from Romania.JQuery is another excellent Javascr into pt framework after prototype. Its purpose is to write less, do more, write less code, and do more.It is a lightweight js Library (only 21 k after compression), which is not suitable for other js libraries. It

The binlog parsing tool is widely used. mysqlbinlog is the most commonly used tool. It has its own merits. For DBA, this article only introduces pt-query-digest, which can be used to solve the problem. The binlog parsing tool is widely used. mysqlbinlog is the most commonly used tool. It has its own merits. For DBA, this article only introduces pt-query-digest, which can be used to solve the problem. T

Troubleshooting of abnormal shutdown of MySQLSlave (pt-slave-restart) Troubleshooting of abnormal shutdown of MySQL Slave (pt-slave-restart) The following three methods are used to handle abnormal shutdown of MySQL Slave.You can also use the pt-slave-restart command of percona-toolkit.The percona-toolkit-2.2.8-1.noarch.rpm needs to install some dependency pa

px\em\pt Unit IntroductionPX Pixel unit name is pixel, relative length unit, pixel (px) is a domestic recommendation relative to the display screen resolution;The EM unit name is the relative length unit. Compared to the font size of the text within the current object, foreign use more, here em and HTML The PT unit name is point, and the absolute length unit is generally the old version of table using the l

as the unit;3. Recalculate the EM values of the enlarged fonts. Avoid duplicate declarations of font size.This is to avoid the 1.2 * 1.2 = 1.44 phenomenon. For example, when you declare a font size of 1.2em in #content, you can only have 1em when you declare the font size of p, not 1.2em, because this em is not em, it becomes 1em=12px because it continues to #content the font height.However, 12px Kanji exception, is obtained by the above method 12px (1.2em) size of Chinese characters in IE does

MySQL performance profiling tool (pt-query-digest) This tool is also from percona-toolkitOther tools in this tool setTroubleshooting of abnormal shutdown of MySQL Slave (pt-slave-restart)Verify MySQL master-slave consistency (pt-table-checksum pt-table-sync)It can analyze various logs to analyze performance issuesIncl