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I have un 4GB RAM AMD Opteron machine (3.2GHz quad) on 64-bit Win2k8 RS2 -- installed Apache Lounge 32-bit version (as general consensus is no big speed win between 32-bit and 64-bit) with thread-safe VC9 PHP 5.3.8.

First byte out on Apache is ok, with mod_deflate, there is a slight betterment over the old Intel 1GB machine. PHP via Apache (as module) and PHP as CLI takes 1 sec for script that takes the old box just over half that time.

MySQL is running fine and fast (64-bit). hosts file is not the probleme.

What settings I should be checking to make the whole PHP proces faster?

TIA, YP

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Profile your code to see what the bottleneck is? See xdebug – Zoredache Nov 17 '11 at 20:50
currently a for loop running 10000 times, with multiplication; i testing on simple 10 line loop... – Yves-Pierre Nov 17 '11 at 20:51
@Zoredache currently is <?php $a=0; $b=1; for ($i = 0; $i < 10000; $i++) { $a += 1; $b = $a / $b; } – Yves-Pierre Nov 17 '11 at 21:08
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You're measuring how well a mathematician can run the 100 yard dash. You can probably get him to do it a bit better with effort, but why not see how well he solves math problems instead?

In other words, test under realistic conditions.

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I agree, but still it seems concerning, that a simple loop would be twice as slow on faster hardware. – Zoredache Nov 17 '11 at 22:25
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