MySQL的TPS和QPS 计算方式
2016-10-26 20:12
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TPS - Transactions Per Second(每秒传输的事物处理个数),这是指服务器每秒处理的事务数,支持事务的存储引擎如InnoDB等特有的一个性能指标。
计算方法:
TPS = (COM_COMMIT + COM_ROLLBACK)/UPTIME
[sql] view
plain copy
use information_schema;
select VARIABLE_VALUE into @num_com from GLOBAL_STATUS where VARIABLE_NAME ='COM_COMMIT';
select VARIABLE_VALUE into @num_roll from GLOBAL_STATUS where VARIABLE_NAME ='COM_ROLLBACK';
select VARIABLE_VALUE into @uptime from GLOBAL_STATUS where VARIABLE_NAME ='UPTIME';
select (@num_com+@num_roll)/@uptime;
QPS - Queries Per Second(每秒查询处理量)同时适用与InnoDB和MyISAM 引擎
计算方法:
QPS=QUESTIONS/UPTIME
[sql] view
plain copy
use information_schema;
select VARIABLE_VALUE into @num_queries from GLOBAL_STATUS where VARIABLE_NAME ='QUESTIONS';
select VARIABLE_VALUE into @uptime from GLOBAL_STATUS where VARIABLE_NAME ='UPTIME';
select @num_queries/@uptime;
计算方法:
TPS = (COM_COMMIT + COM_ROLLBACK)/UPTIME
[sql] view
plain copy
use information_schema;
select VARIABLE_VALUE into @num_com from GLOBAL_STATUS where VARIABLE_NAME ='COM_COMMIT';
select VARIABLE_VALUE into @num_roll from GLOBAL_STATUS where VARIABLE_NAME ='COM_ROLLBACK';
select VARIABLE_VALUE into @uptime from GLOBAL_STATUS where VARIABLE_NAME ='UPTIME';
select (@num_com+@num_roll)/@uptime;
QPS - Queries Per Second(每秒查询处理量)同时适用与InnoDB和MyISAM 引擎
计算方法:
QPS=QUESTIONS/UPTIME
[sql] view
plain copy
use information_schema;
select VARIABLE_VALUE into @num_queries from GLOBAL_STATUS where VARIABLE_NAME ='QUESTIONS';
select VARIABLE_VALUE into @uptime from GLOBAL_STATUS where VARIABLE_NAME ='UPTIME';
select @num_queries/@uptime;
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