PHP and VMware: SLOW

Hello.

I'm finding PHP really slow when it runs in VMware.

To test this, I wrote two benchmark scripts. One in perl, one in php
(attached below)
Both scripts call rand() 100000000 times.

On my ancient 1ghz sarge box:
php takes 3 minutes 28 seconds.
perl takes 1 minute 18 seconds.
php = 3 x perl

On my 3 ghz ubuntu 6.06 VMware instance, running php4:
php takes 2 minutes and 37 seconds.
perl takes 23 seconds.
php = 6 x perl

Why is php slower so much slower under VMware?
If anyone could help, I would really appreciate it.

Thanks

::::::::::::::
rand.php
::::::::::::::
<?
for ($j = 0; $j < 100000000; $j++) {
rand();
}
?>

::::::::::::::
rand.pl
::::::::::::::
#!/usr/bin/perl
for ($i=0;$i<100000000;$i++)
{
rand();
}

.

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