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Date: Tue, 2 May 2017 20:02:15 +0200
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Cc: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] the experimental jit-branch is impressive
From: nikita.ppv@gmail.com (Nikita Popov)

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On Tue, May 2, 2017 at 7:14 PM, lists@rhsoft.net <lists@rhsoft.net> wrote:

> and with a demo-page containing all sort of modules and bloat the
> difference is even greater - can't wait to see that in production
>
> is there anything known when it is expected to arrive in the official tree
> or does Zend even hold it back until the point when they can suprise with a
> "we are done, all tests are fine and we can merge it" announce?
>
> PHP 7.1:
> Requests per second: 316.77 [#/sec] (mean)
> Time per request: 157.844 [ms] (mean)
> Time per request: 3.157 [ms] (mean, across all concurrent requests)
> Transfer rate: 12604.11 [Kbytes/sec] received
>
> PHP 7.2 JIT:
> Requests per second: 925.96 [#/sec] (mean)
> Time per request: 53.998 [ms] (mean)
> Time per request: 1.080 [ms] (mean, across all concurrent requests)
> Transfer rate: 36842.68 [Kbytes/sec] received


These results are very unlikely. I'm 95% sure your benchmark is broken. My
first guess would be that you're benchmarking PHP + JIT against PHP without
opcache. Please share the relevant (opcache-related) portion of the
php.inis you used.

Nikita


> Am 02.05.2017 um 18:00 schrieb lists@rhsoft.net:
>
>> https://github.com/zendtech/php-src/tree/jit-dynasm/ext/opcache/jit
>>
>> that below is a "ab -c 50 -n 100000" on a Intel(R) Core(TM) i7-3770 CPU @
>> 3.40GHz on our core cms (pgo-build with heavy compiler optimizations, only
>> the source tarball deifferent)
>>
>> currently our production 2x6 core machine with two Intel(R) Xeon(R) CPU
>> E5-2643 v3 @ 3.40GHz and the same setup is around 4000-5000 per second
>> which is nearly reached by the 6 years old i7 with the JIT
>>
>> impressive!
>>
>> JIT:
>> Requests per second: 3526.56 [#/sec] (mean)
>> Time per request: 14.178 [ms] (mean)
>> Time per request: 0.284 [ms] (mean, across all concurrent requests)
>>
>> 7.1:
>> Requests per second: 1419.87 [#/sec] (mean)
>> Time per request: 35.214 [ms] (mean)
>> Time per request: 0.704 [ms] (mean, across all concurrent requests)
>>
>
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