How to use date table bootstrap

I wanted to use this date table, to search a lot of database data. I even managed it, but it takes 12 seconds to load the page. Because there is a lot of data registered. Does anyone have an example of how I could do it?

Follow the code:

Front:

<div class="container">
    <div class="row">
        <div class="col-md-12">
            <span class="titleCadastros">LISTAR FROTA</span>
        </div>
        <div class="col-md-12">
            <div class="row">
                <div class="col-md-6">
                    <span class="titleCadastros botaoCad"><a href="cadastrar-frotas.php">CADASTRAR FROTA</a></span>
                </div>
            </div>
        </div>
        <div class="col-md-12 m-b-50">           
            <table id="example" class="display" style="width:100%">
                <thead>
                    <tr>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                    </tr>
                </thead>
                <tbody>
                // Aqui eu coloquei o Laço de repetição
                <?php
                $read = new Read;
                $read->ExeRead('frota', 'ORDER BY id DESC');

                foreach ($read->getResult() as $v):
                   extract($v);

                ?>
                <tr class="odd">
                    <td>$dadosaqui</td>
                    <td>$dadosaqui</td>
                    <td>$dadosaqui</td>
                    <td>$dadosaqui</td>
                    <td>$dadosaqui</td>
                    <td>$dadosaqui</td>
                </tr>
                <?php
                endforeach;
                ?>
                </tbody>
                <tfoot>
                    <tr>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                        <th>Nome das colunas</th>
                    </tr>
                </tfoot>
            </table>

Js:

$(document).ready(function() {
    $('#example').DataTable({
        "processing": true,
        "serverSide": true,
        "ajax": "js/scripts/recebe_frotas.php",
        "deferLoading": 57,
        "oLanguage": {
                    "sProcessing":   "Processando...",
                    "sLengthMenu":   "Mostrar _MENU_ registros",
                    "sZeroRecords":  "Não foram encontrados resultados",
                    "sInfo":         "Mostrando de _START_ até _END_ de _TOTAL_ registros",
                    "sInfoEmpty":    "Mostrando de 0 até 0 de 0 registros",
                    "sInfoFiltered": "",
                    "sInfoPostFix":  "",
                    "sSearch":       "Buscar:",
                    "sUrl":          "",
                    "oPaginate": {
                        "sFirst":    "Primeiro",
                        "sPrevious": "Anterior",
                        "sNext":     "Seguinte",
                        "sLast":     "Último"
                    }
                }
    });    
} );

File that receives Js (receives_frotas.php)

/*
 * DataTables example server-side processing script.
 *
 * Please note that this script is intentionally extremely simply to show how
 * server-side processing can be implemented, and probably shouldn't be used as
 * the basis for a large complex system. It is suitable for simple use cases as
 * for learning.
 *
 * See http://datatables.net/usage/server-side for full details on the server-
 * side processing requirements of DataTables.
 *
 * @license MIT - http://datatables.net/license_mit
 */

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Easy set variables
 */

// DB table to use
$table = 'frota';

// Table's primary key
$primaryKey = 'id';

// Array of database columns which should be read and sent back to DataTables.
// The 'db' parameter represents the column name in the database, while the 'dt'
// parameter represents the DataTables column identifier. In this case simple
// indexes
$columns = array(
    array( 'db' => 'id', 'dt' => 0 ),
    array( 'db' => 'seguradora_id',  'dt' => 1 ),
    array( 'db' => 'rastreador_id',   'dt' => 2 ),
    array( 'db' => 'placacavalo',     'dt' => 3 )    
);

// SQL server connection information
$sql_details = array(
    'user' => 'root',
    'pass' => '',
    'db'   => 'sistema_frota',
    'host' => 'localhost'
);


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * If you just want to use the basic configuration for DataTables with PHP
 * server-side, there is no need to edit below this line.
 */

require( 'ssp.class.php' ); // na documentação tem esse arquivo, mas não sei o que seria!

echo json_encode(
    SSP::simple( $_GET, $sql_details, $table, $primaryKey, $columns )
);