slow query

First, IntroductionPt-query-digest is a tool for analyzing slow queries for MySQL, which analyzes Binlog, general log, Slowlog, It can also be analyzed using showprocesslist or MySQL protocol data crawled by tcpdump. The analysis results can be

First, IntroductionPt-query-digest is a tool for analyzing slow queries for MySQL, which analyzes Binlog, general log, Slowlog, It can also be analyzed using showprocesslist or MySQL protocol data crawled by tcpdump. The analysis results can be

The log is the same as people write diaries, record the past things. But the diary of a person is subjective (remember what you want to remember), and the database log is objective, according to the record content is divided into the following

MySQL turn on slow query log MySQL accelerated query speed of a unique weapon: query cache on the MySQL query cache from five angles for detailed analysis: How to query cache, how to configure, how to maintain, how to determine the performance of

mysql-Slow Query logtags (space delimited): MySQLTurn on slow query log慢查询是一种mysql提供的日志，记录所有执行时间超过某个时间界限的sql的语句。这个时间界限我们可以指定。在mysql中默认没有开启慢查询，即使开启了，只会记录执行的sql语句超过10秒的语句[Way One]Enter mysql:mysql-uroot-h127.0.0.1-proot# to view the parameters related

Slowquerylog slow query statement bitsCN.com Slow query log Slow query statement slow query log Slow query log. by setting related slow query parameters, you can output Slow SQL statements of the database to the log. this is the slow query log, in

Configure slow queryThe default my. cnf file is in the/etc/directory.Vim/etc/my. cnf# Slow_querySlow_query_log = 1 # enable slow querySlow_query_log_file =/var/lib/mysql/mysql-slow.log # set the slow query pathLong_query_time = 0.01 # set the slow

MySQL slow Query Slow query (slow log)It can help us locate specific SQL statements for SQL statement optimization. For example, slow query logs record the SQL statements whose execution time exceeds the given value, so as to locate the

Error log:By default, the error log probably records the following areas of information:1. Information during server startup and shutdown (not necessarily error messages, for example, how MySQL launches InnoDB tablespace files, how to initialize its

Reference article:Http://ourmysql.com/archives/1359?utm_source=tuicool&utm_medium=referralOfficial: Https://github.com/box/AnemometerSingle-node anemometer monitoring1 Installing Anemometer# cd/data/www/web3# git clone

MySQL slow Query The slow query (slow log) helps us locate specific SQL statements for SQL statement optimization. For example, the slow query log records the SQL statements whose execution time exceeds the given value, locate the problem. Enable

Slow Query Log1. The slow query log is logged when the query does not return results for a certain amount of time.2. The slow query log helps DBAs find SQL statements that perform inefficiently and help with database optimization efforts.3. The slow

(1) Configuration Open Linux: Add the following statement to the MySQL configuration file my.cnf: Log-slow-queries=/var/lib/mysql/slowquery.log #指定日志文件存放位置, can be null, the system will give a default file Host_name-slow.logLong_query_time=5

Open MySQL Slow query MySQL Slow query log for tracking Php+mysql system under the MySQL load tuning problem is very useful, such as installing a lot of discuz! plug-ins users, so you can probably troubleshoot those plug-ins have code problems. In

What is a slow query?When the query executes more than the specified time (long_query_time) of the MySQL system setting, the query is called a slow query and is logged into the slow query log file.Logging slow query log settings is off, need to be

MySQL slow query log is useful for tracking problematic queries, can be analyzed in the current program has a very resource-intensive SQL statement, that how to open MySQL slow query log records it? In fact, open MySQL slow query log is simple,

MySQL slow query analysis bitsCN.com MySQL slow query analysis is essential for optimizing database slow query statements when we perform systematic optimization, especially for e-commerce-type severe MYSQL applications. Let's take a look at how to

Instance shutdown commandREDID-CLI shutdown Description: Forced bgsave on close so it takes some time note: At start, you need to load the data into memory before Redis listen the port after the data is loadedCluster-related commands1. CLUSTER Info

The MySQL slow query log is a log record provided by MySQL, which is used to record SQL statements that execute more than long_query_time seconds. The minimum and default values for Long_query_time are 0 and 10, respectively. It means SQL statements

I. Aspects of database optimization inclusionDatabase optimization is a kind of comprehensive technology. There is not a way to improve the efficiency of the database very much. But through a variety of improvements. This makes the database