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mysql transaction per seconds

Posted on 2012-04-10
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Last Modified: 2012-04-25
hi
i belived
SHOW GLOBAL STATUS LIKE ‘com_insert’;

will tell you , how much insert happening in the db

but can you pleaes tell me
whats the theory behind finding out

how much transaction per second my server handling ??

we use innodb engine.
thanks
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Question by:fosiul01
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johanntagle earned 2000 total points
ID: 37830870
If by transaction you mean group of commands, the last one being a commit, there's a com_commit counter.

But if you want to track each select, insert, update, delete, prepared statement, etc, you have to look at a lot of counters.  For example, depending on whether it gets the results from the query cache or a direct read from the tables, either the qcache_hits or the com_select counter gets incremented.  http://dev.mysql.com/doc/refman/5.1/en/server-status-variables.html#statvar_Com_xxx would be a good starting point.

Another way I can think of is to turn on the slow query log and set long_query_time = 0.  This will log all queries, which then you will parse using a tool like mysql_slow_log_parser (http://www.retards.org/projects/mysql/).  The summary report there can give how many times each query was run, which you can sum up to give you the total number of SQL's run during the time you were logging all commands.  WARNING: the logfile can get huge fast, and you need to run the parser on a machine with huge memory.
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by:fosiul01
ID: 37834797
hi thanks for reply ..

when you login to mysql , then press \s

it give you a Queries per second

examaple , mine is 300/s

is not it QPS ?

or that means diffferent thing .
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