added small script to test PDO performance for data aggregation

This commit is contained in:
Steffen Vogel 2010-07-28 00:34:43 +02:00
parent 38119c8b34
commit 11a1461c6c
2 changed files with 48 additions and 0 deletions

48
share/tests/pdobench.php Normal file
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<?php
/**
* @package tests
* @copyright Copyright (c) 2010, The volkszaehler.org project
* @license http://www.gnu.org/licenses/gpl.txt GNU Public License
*/
/*
* This file is part of volkzaehler.org
*
* volkzaehler.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* volkzaehler.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
*/
$start = microtime(true);
$dbh = new PDO('mysql:host=localhost;dbname=volkszaehler', 'vz', 'demo');
$attr = array();
$attr[PDO::ATTR_CURSOR] = PDO::CURSOR_SCROLL;
$stmt = $dbh->prepare('SELECT timestamp, value FROM data LEFT JOIN channels ON data.channel_id = channels.id WHERE channels.indicator = \'temperature\'', $attr);
for ($i = 0; $i < 1000; $i++) {
$stmt->execute();
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$c = 0;
foreach($stmt as $row) {
}
}
echo $stmt->rowCount() . '<br />';
echo 'time: ' . round(microtime(true) - $start, 6);
?>