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Date: Fri, 9 Jul 2021 00:23:41 +0200
Message-ID: <CAH5C8xUzQiRm8SGYN2kuQHefyO-s+DfQY=2PktMMBRVqoq96jg@mail.gmail.com>
To: Nikita Popov <nikita.ppv@gmail.com>
Cc: Craig Francis <craig@craigfrancis.co.uk>, PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] [VOTE] is_literal
From: kocsismate90@gmail.com (=?UTF-8?B?TcOhdMOpIEtvY3Npcw==?=)

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Hi Nikita,

I performed a few other benchmarks in order to provide a little bit more
insights into the performance aspect of the RFC. My latest measurement is
using the same setup as the previous
one, although I made a few smaller changes in the process (e.g. changing
the order of the tests). So at the end, I got the following results:

- Laravel demo app: +0.1%
- Symfony demo app: +0.43%
- bench.php: +0.4%
- custom concat bench: +3.89%

The results are comparing the "literals" branch with the commit in master
on which Joe's work is based. As far as I remember, the simpler variant of
is_literals had a 0.1% slowdown
in case of Symfony, and 2.09% in case of the custom concat benchmark.
Personally, I think even the current numbers are acceptable, especially
because PHP 8.1 is going to be
roughly 30% faster than PHP 8.0 according to my benchmark in case of the
Symfony demo app. Laravel's result is very similar, but I don't remember
about the exact numbers.

Regards:
M=C3=A1t=C3=A9

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