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To: Dmitry Stogov <dmitry@zend.com>
CC: Zeev Suraski <zeev@zend.com>, Andrea Faulds <ajf@ajf.me>, 
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Subject: Re: [PHP-DEV] phpng: Refactored PHP Engine with Big Performance Improvement
From: rasmus@lerdorf.com (Rasmus Lerdorf)

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On 5/12/14, 12:21 AM, Dmitry Stogov wrote:
> the performance difference may be significant.
> For example qdig.
>=20
> mod_php (PIC)       440 req/sec
> FastCGI (non-PIC)  537 req/sec
>=20
> The bechmark was done with 32-bit build of phpng.
>=20
> I didn't get time to investigate it in all details, but it'll really
> make sense.

But on 32-bit mod_php (libphp5.so) doesn't need to be PIC, does it? We
went through this many years ago and worked out that a non-PIC
libphp5.so works fine.

Things are a bit different on 64-bit because of 32-bit immediate operands=
=2E

However, I don't really believe that PIC vs. non-PIC accounts for
anywhere near a 20% performance difference in a real-world scenario. Can
you build phpng non-pic and run the same test again?

-Rasmus


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