Conocer la velocidad de transferencia del servidor

[neodani]

Buenas,

¿Sabéis como puedo medir la capacidad de transferencia del servidor? es decir, la velocidad de descarga y/o de subida?

He encontrado un script pero los resultados que me muestra no son del todo convincentes. Es el siguiente:

Código PHP:

<?php 
 
// Initialize cURL with given url
$url = 'http://download.bethere.co.uk/images/61859740_3c0c5dbc30_o.jpg';
$ch = curl_init($url);
 
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, 'Sitepoint Examples (thread 581410; http://www.sitepoint.com/forums/showthread.php?t=581410)');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 2);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);
 
set_time_limit(65);
 
$execute = curl_exec($ch);
$info = curl_getinfo($ch);
 
// Time spent downloading, I think
$time = $info['total_time'] 
      - $info['namelookup_time'] 
      - $info['connect_time'] 
      - $info['pretransfer_time'] 
      - $info['starttransfer_time'] 
      - $info['redirect_time'];
 
 
// Echo friendly messages
header('Content-Type: text/plain');
printf("Downloaded %d bytes in %0.2f seconds.\n", $info['size_download'], $time);
printf("Which is %0.3f mbps\n", $info['size_download'] * 8 / $time / 1024 / 1024);
printf("CURL said %0.3f mbps\n", $info['speed_download'] * 8 / 1024 / 1024);
 
echo "\n\ncurl_getinfo() said:\n", str_repeat('-', 31 + strlen($url)), "\n";
foreach ($info as $label => $value)
{
    printf("%-30s %s\n", $label, $value);
}
 

Y subido este script al servidor me da el siguiente resultado.

Código:

Downloaded 6576848 bytes in 10.51 seconds.
Which is 4.774 mbps
CURL said 4.576 mbps


curl_getinfo() said:
---------------------------------------------------------------------------------------------
url                            http://download.bethere.co.uk/images/61859740_3c0c5dbc30_o.jpg
content_type                   image/jpeg
http_code                      200
header_size                    263
request_size                   198
filetime                       -1
ssl_verify_result              0
redirect_count                 0
total_time                     10.965
namelookup_time                0.001
connect_time                   0.002
pretransfer_time               0.002
size_upload                    0
size_download                  6576848
speed_download                 599803
speed_upload                   0
download_content_length        6576848
upload_content_length          0
starttransfer_time             0.45
redirect_time                  0

Si un 1MB equivale a 8Mb

Downloaded 6576848 bytes in 10.51 seconds.
Which is 4.774 mbps
CURL said 4.576 mbps

Quiere decir que descargó la imagen a 4,774 / 8 = 0,596MB >> aprox. 596 KiloBytes es muy poco!!

Sabéis alguna otra de medirlo? el script falla? alguien lo puede probar y poner sus resultados?

Muchas gracias de antemano!