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In the previous article, pt-table-checksum was used to verify data consistency. This section describes how to verify master-slave data consistency. when determining whether master-slave data is inconsistent, you must consider how to fix it. Push here In the previous article, pt-table-checksum was used to verify data consistency. This section describes how to verify master-slave data consistency. when determ

Font size of the set units, commonly used in 2 kinds: px, pt. What is the difference between the two?First understand the basic concept: PX is to represent pixel, pixels, is the most basic point of display data on the screen;PT is point, a common unit in the printing industry, equal to 1/72 inches.This is clear, PX is a point, it is not the length of the natural unit, who can say a "point" how long? Can be

First, find out the basic concept: Px represents pixel, pixels, and is the most basic point for displaying data on the screen; Pt is the point, which is a common unit in the printing industry and equals to 1/72 inch. It is clear that PX is a point, which is not a unit of natural length. Who can tell how long a "point" is? It can be very small or large. If the point is very small, the image will be clear. We call it "High Resolution", and vice versa, i

First, find out the basic concept: Px represents pixel, pixels, and is the most basic point for displaying data on the screen; Pt is the point, which is a common unit in the printing industry and equals to 1/72 inch. It is clear that PX is a point, which is not a unit of natural length. Who can tell how long a "point" is? It can be very small or large. If the point is very small, the image will be clear. We call it "High Resolution", and vice versa,

Tags: delete user name connect creating action query SSL how ATIHow do I check every 10 seconds to kill a query that exceeds 100 seconds for a specified user? Pt-kill--no-version-check--host 127.0.0.1--port 3306--user ' xxxxxx '--password ' xxxxxx '--charset UTF8--match-command Query--match-user The specified user name--busy-time--kill--victims all--interval--print Common parameter Description No-version-checkNot up-to-date check vers

Analysis of slow query logs by pt-query-digest in MySQL, ptquerydigest I. Introduction Pt-query-digest is a tool used to analyze mysql slow queries. It can analyze binlog, General log, and slowlog, you can also use SHOWPROCESSLIST or MySQL protocol data captured by tcpdump for analysis. You can output the analysis results to a file. The analysis process is to first parameterize the query statement condition

This article mainly introduces the parameters of common pt-kill processes. if you need it, refer to pt-kill, which is an excellent tool for kill MySQL connection and part of percona toolkit, when the maximum number of connections is exceeded due to a large number of idle connections and a problematic SQL statement causes a high mysql load, you must kill some connections. This tool is mainly used for this pu

Tcpdump pt-query-digest common operations, Tcpdump pt-query-digest Common OperationsTcpdump pt-query-digest Objective: Use the tcpdump command to capture data packets according to certain rules, and then dump them to intermediate files. Use pt-query-digest to analyze intermediate files according to certain rules.Tcpdum

Label:1. Introduction to Slow Queries http://hllnihao.iteye.com/blog/1461472 2. Pt-query-digest Installation http://blog.csdn.net/seteor/article/details/24017913 [Email protected]]# wget percona.com/get/pt-query-digest [[email protected]]# chmod u+x pt-query-digest 3. Use (1) Direct Parse slow query file: PT-query-di

Pt-kill Common Kill process parameters1. Press User Kill/usr/bin/pt-kill--busy-time--match-user= "dbUSER1 | DbUSER2,... "--victim all--interval 1--kill--daemonize--pid=/tmp/ptkill.pid--print--log=/home/pt-kill.logNote: Test by user to kill thread, note--match-user between multiple users | Separated.2. Press query to source host kill/usr/bin/

Pt-duplicate-key-checkerThe function is to find duplicate indexes and foreign keys from the MySQL table, the tool lists the duplicate indexes and foreign keys, and generates a statement to delete the duplicate index, which is very convenient find out the extra index: pt-duplicate-key-checker--user= Root--password=db123--socket=/var/tmp/mysql.sock--database=game Results: #################### ###############

Label:MySQL Database optimization pt-query-digest use I. Introduction of PT-QUERY-DIGEST Tools Pt-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

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 on the master database using timestamps, then, read the updated timestamp from the database and compare it with the local system time to monitor the # code/5799.html "target =" _ blank "> master/slave replication latency of the MySQL database, we can use

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 on the master database using timestamps, then read the updated timestamp from the database and compare it with the local system time to monitor the https://www.php1.cn/code/5799.html "target =" _ blank "> MySQL database master/slave replication latency,

Tags: filter rowltemitstat Ignore eachinnodb return ##====================================== ===============## pt-osc Workflow: 1, check if the change table has a primary key or a unique index, whether there is a trigger Span style= "FONT-SIZE:14PX; Font-family: ' Courier New ', courier; >2, check the table structure of the modified table, create a temporary table, execute the ALTER TABLE statement on the new table 3, create three trigger

What role does pt, px, em, and rem play in css? csspx Some time ago, I finally learned pt, px, em, and rem carefully and made a simple record. What are pt, px, em, and rem? PtThe unit name is Point and the absolute length unit. Currently, the web page rarely or even does not appear. It is often used in the printing industry.Unit conversion: 1in = 2.54 = 25.4mm =

First, simple installationwget percona.com/get/pt-query-digestchmoe u+x pt-query-digestSecond, simple useMoreReference article: Http://blog.itpub.net/29773961/viewspace-2024992/pt-query-digest is a set of tools to help DBAs manage MySQL Percona-toolkit , developed by Percona company. For log analysis, this is used to analyze slow log, in addition to the analysis

 PT (Point, LB): is a unit of physical length that refers to an inch of 72 points. px (pixel, pixels): 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. em (relative length units, relative

A good tool for connecting to killMySQL is part of perconatoolkit. when there are many idle connections, the maximum number of connections is exceeded, and a problematic SQL statement causes high mysql load, you need to kill some connections. This tool is mainly used for pt-kill. it is an excellent tool for kill MySQL connections and is part of percona toolkit, when the maximum number of connections is exceeded due to a large number of idle connection

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