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Date: Wed, 24 Jun 2015 12:29:53 +0200
Message-ID: <CAH-PCH7gTrosOo=Y=bQfDgQ773c4x59jnQat520VrT6720vgrg@mail.gmail.com>
To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=089e0160c150c88f50051940fc2a
Subject: Re: [PHP-DEV] Move to Fast ZPP?
From: tyra3l@gmail.com (Ferenc Kovacs)

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On Wed, Jun 24, 2015 at 12:21 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:

> Hi Ferenc,
>
> On Wed, Jun 24, 2015 at 6:21 PM, Ferenc Kovacs <tyra3l@gmail.com> wrote:
>
>> it was meant as a performance optimization for the most heavy/hot
>> codepaths.
>> What gave you the idea that the situation changed and we should use it
>> everywhere?
>>
>
> I'm curious about the status of Fast ZPP and it's usage.
> The RFC says it reduces function call overheads by 90% and
> I didn't see reason why we shouldn't move to Fast ZPP.
>
> "For some really simple function like is_string() or ord() the overhead o=
f
> zend_parse_parameters() may be about 90%."
> https://wiki.php.net/rfc/fast_zpp
>
> I'll use it for functions called many times.
>
>
I wouldn't consider the likes of pg_fetch_* to be appropriate for for using
Fast ZPP, even db heavy applications are unlikely to call it more than a
houndred times per request, so the perf gain would be negligible compared
to the increased cost of maintenance.


--=20
Ferenc Kov=C3=A1cs
@Tyr43l - http://tyrael.hu

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