Slow performance MySql

Question

I\'m trying out performance of a system I\'m building, and it\'s really slow, and I don\'t know why or if it should be this slow. What I\'m testing is how many single INSERT

Answer 1

Your test isn't a very good way of judging performance. Why because you are preparing a statement 1000 times. That's not the way prepared statements are supposed to be used. The statement is prepared once and different parameters bound multiple times. Try this:

public function __construct() {
    $this->mDb = new mysqli($this->DBHOST, $this->DBUSERNAME
                          , $this->DBPASSWORD, $this->DBNAME
                          , $this->DBPORT);
    $this->isConnected = true;
    $queryString = 'INSERT INTO `users`(`email`, `company_id`) '
                    .'VALUES (?, 1)';
    $this->stmt_insert = $this->mDb->prepare($queryString);

}

and

public function insertUser($user) {
    $this->stmt_insert->bind_param('s', $user);
    if ($this->stmt_insert->execute()) {
        return 1;
    } else {
        return 0;
    }
}

And, you will be seeing a huge boost in performance. So to recap, there's nothing wrong with your system, it's just the test that was bad.

Update:

Your Common Sense has a point about preparing in advance and reusing the prepared statement not giving a big boost. I tested and found it to be about 5-10%

however, There is something that does give a big boost. Turning Autocommit to off!. Inserting 100 records which previously took about 4.7 seconds on average dropped to < 0.5s on average!

$con->autocommit(false);

/loop/ $con->commit();