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Date: Tue, 13 May 2014 18:34:53 +0400
Message-ID: <CA+9eiLuA741M26ezeOG91jxv9CoY7o5iWJ+L=DgW2c=cSjCQXw@mail.gmail.com>
To: Rasmus Lerdorf <rasmus@lerdorf.com>
Cc: Zeev Suraski <zeev@zend.com>, Andrea Faulds <ajf@ajf.me>, Andi Gutmans <andi@zend.com>, 
	Sebastian Bergmann <sebastian@php.net>, "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=bcaec548a66d9b709f04f948f7b2
Subject: Re: [PHP-DEV] phpng: Refactored PHP Engine with Big Performance Improvement
From: dmitry@zend.com (Dmitry Stogov)

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In case you care about few additional req/sec it must not be a problem to
do it on most major Linux distributions.

$ CC="gcc -m32" ./configure --without-pic ....

anyway, 64-bit phpng gets much more improvement because of reduced memory
consumption.

Thanks. Dmitry,




On Tue, May 13, 2014 at 6:10 PM, Rasmus Lerdorf <rasmus@lerdorf.com> wrote:

> On 5/12/14, 11:05 PM, Dmitry Stogov wrote:
> > Even in this 64-bit world, I would suggest to try 32-bit PHP. In most
> > cases it shows better performance.
> > X32 ABI would be ideal, but it's not widely supported yet.
> >
> > Anyway, PIC doesn't make significant slowdown on x86_64, because of
> > additional CPU registers and special PIC support.
> >
> > We tried GOTO executor and, of course, it's faster.
> > Actually, after all the optimizations, instruction dispatch overhead
> > became more and more significant,
> > so we will have to think about it.
>
> But I don't think people are going to be building PHP 32-bit if the rest
> of their system is all 64-bit. And PIC vs. non-PIC isn't really an issue
> anymore as I suspected. We should be optimizing for 64-bit. By the time
> phpng hits the world there will be even fewer 32-bit deploys out there.
>
> -Rasmus
>
>

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