pt 2430pc

px (Pixe, pixel L): is a virtual length unit, is the digital image length unit of the computer system, if PX to be converted to physical length, you need to specify the accuracy dpi (Dots per inch, pixels per inch), when scanning printing generally have dpi optional. Windows system By default is 96dpi,apple system default is 72dpi. Relative length units. Pixel px is relative to the display screen resolution. (quoted from CSS2.0 manual) PX Features: IE cannot adjust the font size using PX as the

I. Introduction of PT-QUERY-DIGEST ToolsPt-query-digest is a tool for analyzing MySQL slow query, which can analyze Binlog, general log, Slowlog, or through show Processlist or the MySQL protocol data captured by Tcpdump is analyzed. The analysis results can be exported to a file, the analysis process is the parameters of the query statement, and then the parameterized query after the grouping statistics, statistics of the query execution time, freque

Tags: www sch contains lan Linux usr hang strong andPick to: This paper describes the problemof MySQL DDL , thept-online-schema-change of the work principle , and the actual use of The pt-online-schema-change tool modifies the 160 million-level data table structure on-line in the production environment. in a software life cycle, we all know that the design of the early table structure is very important. , because when the table data volume comes up,

One of the most confusing aspects of CSS styling is the Font-size property of the text extension in your application. In CSS, you can display the size of text in a Web browser in four different units of measure.Which of the four units is best for the Web? The problem aroused a wide controversy. It is difficult to find a definite answer, because it is so difficult to answer on its own.Contact these units1. "Ems" (EM): "em" is a scalable unit for Web document Media presentation. An em equals the c

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

One of the most confusing aspects of CSS styling is the Font-size property of the text extension in your application. In CSS, you can display the size of text in a Web browser in four different units of measure. Which of the four units is best for the Web? The problem aroused a wide controversy. It is difficult to find a definite answer, because it is so difficult to answer on its own. Contact these units 1. "Ems" (EM): "em" is a scalable unit for Web document Media presentation. An em equals t

1.Concept-related①. Terminology Interpretation TGT, ST, PGT, Pgtiou, PT, wherein the CAS1.0 protocol in the bill, PGT, Pgtiou, PT is the CAS2.0 protocol in the notes.CAs is a user-issued login ticket that has a successful login with CAs . After CAs authentication succeeds, theTGT object, put into its own cache,CAS -generated cookie, then the TGT , if any, then indicates the user has logged in before, if not

I am always asked about the differences between PX, PT, and Em. Sometimes I will also find out what units I should use. I have checked some articles specially today. Although this article is a long time ago, however, the explanation is comprehensive. Click to view Original Text 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

Pt-table-checksum Use Practice The most contact in the work is the MySQL replication, because now the company is also using the MySQL 5.1.x version, in the replication is still a lot of problems, such as the main library down or from the library downtime will cause replication interruption, usually we need to do artificial repair (MySQL The 5.5 version solves most of the problems), or a lot of times it is necessary to promote a master library from th

Label:In "MySQL Insert/Update data" This article mentions that, using the load data infile statement, you can load data from a file directly into MySQL, but if the file is very large, you may also need to cut the file, multiple loads, in which case, You can use the Pt-fifo-split tool to split a file into multiple data blocks (chunks) to control the amount of data that is transferred to the MySQL server each time.Pt-fifo-split can simulate cutting file

Label: Original address: Use Anemometer to visualize MySQL slow query based on Pt-query-digest 84223932 This article mainly introduces the use of anemometer based on pt-query-digest MySQL slow query visualization, because the online data is relatively small, and are in English, encountered an error there is no relevant reference material, so write this article. Welcome reprint, please indicate the au

is, when html{font-size:62.5% is set, the root unit of this page is 10px, that is, any element whose 1rem is equal to "10px". Isn't it convenient. 5: Here are some advanced, VW VH VMS, in short, whether mobile or PC, the screen width is 100vw, screen height is 100vh, somewhat similar to 100%, but different from%, because the% units are relative to the parent, and both VW and VH are relative to the entire screen screen;6: Whereas VMs are a complement to VW and VH, that is, when the screen width

How to Use pt-online-schema-change to change the primary key of a MySQL table, ptonlinechangeschema When the service runs for a period of time and finds that the original primary key settings are not reasonable, you want to change the primary key. This kind of requirement is quite large in actual production. Next, let's take a look at how pt-online-schema-change solves such problems. First, create a test t

[MySQL] online table redefinition-pt-online-schema-change bitsCN.com MySQL does not support online table redefinition like Oracle itself, but we can use the open-source software percona-toolkit tool pt-online-schema-change for online redefinition. Official documents: http://www.percona.com/doc/percona-toolkit/2.2/pt-online-schema-change.html#

Reprinted from: http://blog.sina.com.cn/s/blog_42cdca7d0100qcep.html Pt (point, LB) is a physical length unit, which refers to 1 inch of 72 points.Pixel (pixel) is a virtual length unit, which is the unit of the digital image length of a computer system. To convert px to a physical length, you must specify the precision DPI (Dots Per Inch, the number of pixels per inch. DPI is generally available for scanning and printing. In Windows, the default valu

Generally, when designing a webpage, the font usually uses pixels (PX) or multiples (EM ). One day, I began to reconstruct the page, opened the manuscript from the designer with PS, and began to cut the graph. When I checked the text, I found that the font size was set with Pt, for example: To understand how PT and PX are converted,The documents compiled by Baidu are as follows: Px indicates pixel an