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Calculating number of Connection to MySQL

Terminal - Calculating number of Connection to MySQL
mysql -u root -p -e"show processlist;"|awk '{print $3}'|awk -F":" '{print $1}'|sort|uniq -c
2011-12-22 05:37:36
User: prasadwani
Functions: awk uniq
0
Calculating number of Connection to MySQL

This command will help you to find how many number of connection are made to given mysql and what are the different hosts connected to it with number of connection they are making.

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
mysql -u root -p -BNe "select host,count(host) from processlist group by host;" information_schema
2011-12-22 10:35:23
User: flatcap
Tags: mysql
6

Count the number of active connections to a MySQL database.

The MySQL command "show processlist" gives a list of all the active clients.

However, by using the processlist table, in the information_schema database, we can sort and count the results within MySQL.

mysql -NBe 'show global status like "Threads_connected";' | cut -f2
mysql -u root -p -N -e"show processlist\G;" | egrep "Host\:" | awk -F: '{ print $2 }' | sort | uniq -c

Know a better way?

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What others think

MySQL keeps the number of connections in the Thread_connected status variable; see more here: http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html#statvar_Threads_connected.

(Even if you really want to count the connections yourself, the use of two awk processes, sort and uniq is rather excessive.)

Comment by Jubal 150 weeks ago
mysql -uroot gamification_development -e "show global status;" | grep Connections
Comment by mcandre 82 weeks and 2 days ago
mysql -u root -e "show global status like 'connections';"
Comment by mcandre 82 weeks and 2 days ago
mysql -u root -e "SHOW STATUS LIKE '%conn%';"
Comment by mcandre 82 weeks and 2 days ago

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