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PostgreSQL client api

From: "Antimon" <antimon(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: PostgreSQL client api
Date: 2006-03-29 01:01:45
Message-ID: 1143594105.124153.294320@i39g2000cwa.googlegroups.com (view raw or flat)
Thread:
Lists: pgsql-general
Hi,
I was testing MySQL and PgSQL performances on my home box (amd athlon
64 3000, 1gig ddr ram, sata I hdd, win xp (x86)), select and insert
times seeemed identical with innoDB.

But when i try to query both using php, there's a huge difference even
for a funny query like "select 1"

Here's the code:

<?php
$mtime = microtime(true);

$pdo = new PDO('pgsql:host=localhost;dbname=test', "testacc", "pw");
for ($i = 0; $i < 10000; $i++)
{
	$result = $pdo->query("Select "+$i);
}

echo microtime(true) - $mtime;
echo "<br>";

$mtime = microtime(true);

$pdo = new PDO('mysql:host=localhost;dbname=test', "testacc", "pw");
for ($i = 0; $i < 10000; $i++)
{
	$result = $pdo->query("Select "+$i);
}

echo microtime(true) - $mtime;
echo "<br>";
?>

output is:
2.7696590423584
0.89393591880798

Nearly 3 times slower even w/o any table queries. But i could not
reproduce this by writing stored procs on both which selects 0-10000 in
a loop to a variable. results were almost same.
(I tried pg_ and mysqli_ functions too, results were not too different)

Is it mysql client libraries performs better? Or postgre stored procs
are 3x faster? I cannot understand, since there is not even an io
operation or any query planning stuff, what is the cause of this?

Thanks.


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Subject: Re: PostgreSQL client api
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