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Asked: 2026-06-07T20:50:55+00:00

Im trying to stress test mysql: for($i=0;$i<30000;$i++) { mysql_connect(localhost,admin,admin); mysql_select_db(magic); mysql_query(INSERT INTO Persons VALUES

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Im trying to stress test mysql:

 for($i=0;$i<30000;$i++)
{
 mysql_connect("localhost","admin","admin");
 mysql_select_db("magic");
 mysql_query(INSERT INTO Persons
 VALUES   (4,'9999999999999999999999999999999999999999999999999999999999999999999999999999999999'));
 mysql_close(); 
}

It only inserts 25985, not more.
Table schema : id = primary int, content = long text

Tt gives me error cannot connect to mysql, even though I increase the max connections.

Any solution would be appreciated 🙂

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1 Answer

  1. Editorial Team

    “The amount of connection is damn to high !” Kidding !

    The number of connection is provided by the number of RAM available on your computer. So if you have gygabites of RAM you can have like 10k connections, depend on your system, the RAM allowed to your connection etc.

    Check it here : MYSQL : too many connections

    The maximum number of connections MySQL can support depends on the quality of the thread library on a given platform, the amount of RAM available, how much RAM is used for each connection, the workload from each connection, and the desired response time.

    Why do you need so much connections at the same time ? One connection and 30.000 insertions should be OK but not 30.000 connections at the same time.

    Hope it helps 🙂

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