Forums upgraded to PHP 7

Forums have finally been updated to PHP 7 from PHP 5.6.26. Currently, PHP 7.0.12 in use with extra performance boost in Centmin Mod 123.09beta01 branch by enabling Profile Guided Optimizations (PGO) for PHP 7 with training against both Wordpress, Drupal, MediaWiki like PHP code paths (provided by Intel) + Xenforo code paths (seems that didn't work)

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On CentOS 6.8 enabled:

• Intel processor optimised PHP binary compilation & PHP extension compilation (GENERAL_DEVTOOLSETGCC)
• + Profiled Guided Optimizations PGO (PHP_PGO)
• + PHP_PGO_CENTOSSIX (use GCC 4.9.2 instead of GCC 4.4.7 with CentOS 6 so able auto detected for E5-2680v3 as Haswell based for Linode 8GB VPS. GCC 4.4.7 native compiler would of only detected processor under Core2 family instead of Haswell)

via these persistent config file /etc/centminmod/custom_config.inc set options prior to running centmin.sh menu option 5 to update to PHP 7.0.12 pointing to my Xenforo index page for PGO training

Code (Text):

PHP_PGO='y'
PHP_PGO_CENTOSSIX='y'
#PHPPGO_INDEXPATH='/home/nginx/domains/mydomain.com/public/index.php'
GENERAL_DEVTOOLSETGCC='y'

Code (Text):

php -v
PHP 7.0.12 (cli) (built: Oct 14 2016 06:07:45) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.12, Copyright (c) 1999-2016, by Zend Technologies

 

Seems got errors on PGO training for xenforo index.php page during PHP upgrade compilation.

Code (Text):

An unexpected error occurred. Please try again later.Status: 500 Internal Server Error
Content-Type: text/html; charset=utf-8
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-control: private, max-age=0, no-cache, must-revalidate
Pragma: no-cache

So folks can remove this entry from persistent config file /etc/centminmod/custom_config.inc if you are trying to train PHP 7 against Xenforo. Seems training works either on Wordpress index.php pages or Intel provided training profile scripts for Wordpress, Drupal, MediaWiki like PHP code paths

Code (Text):

PHPPGO_INDEXPATH='/home/nginx/domains/mydomain.com/public/index.php'

 

Any forum bug reports or issues can be reported in Forum Feedback & Suggestions forums

 

By the numbers with webpagetest.org Los Angeles Cable 5mbps comparison test for PHP 7.0.12 + PGO vs PHP 5.6.26

Love the slight but better speeds

PHP 7 + PGO



PHP 5.6



Filmstrip and Video Comparison

 

For folks curious about Xenforo debug page load times with PHP 7.0.12 + PGO enabled on my 8GB 4CPU Linode KVM VPS in Fremont, CA.

• Forum Index = Timing: 0.0471 seconds Memory: 5.910 MB DB Queries: 12
• Centmin Mod News forum = Timing: 0.0429 seconds Memory: 5.398 MB DB Queries: 10
• PHP 7 PGO Thread = Timing: 0.0521 seconds Memory: 6.281 MB DB Queries: 18
• Featured Thread Index = Timing: 0.0494 seconds Memory: 5.490 MB DB Queries: 8
• Members List = Timing: 0.0446 seconds Memory: 5.137 MB DB Queries: 6
• Media Index = Timing: 0.0341 seconds Memory: 4.726 MB DB Queries: 11
• Resource Manager Index = Timing: 0.0331 seconds Memory: 4.822 MB DB Queries: 10
• Search = Timing: 0.0306 seconds Memory: 4.782 MB DB Queries: 6
• Help Page = Timing: 0.0233 seconds Memory: 4.436 MB DB Queries: 5

~55% faster than and ~45-50% less memory than when forums were on PHP 5.6 If was on dedicated server instead of VPS probably can shave another 40-50% off those times !

 

Curious how forum is performing with more XF addons added (~98 addons total) in past 10 months with PHP 7.1.8 + PGO enabled on my 8GB 4CPU Linode KVM VPS in Fremont, CA.

• Forum Index = Timing: 0.0559 seconds Memory: 6.834 MB DB Queries: 18
• Centmin Mod News forum = Timing: 0.0533 seconds Memory: 6.302 MB DB Queries: 19
• PHP 7 PGO Thread = Timing: 0.0598 seconds Memory: 7.427 MB DB Queries: 22
• Featured Thread Index = Timing: 0.0474 seconds Memory: 7.017 MB DB Queries: 15
• Members List = Timing: 0.0492 seconds Memory: 5.888 MB DB Queries: 12
• Media Index = Timing: 0.0381 seconds Memory: 5.482 MB DB Queries: 17
• Resource Manager Index = Timing: 0.0392 seconds Memory: 5.627 MB DB Queries: 16
• Search = Timing: 0.0282 seconds Memory: 5.629 MB DB Queries: 11
• Help Page = Timing: 0.0288 seconds Memory: 5.193 MB DB Queries: 11

Looking forward to PHP 7.2 for more gains

Forum index break down stats

Code (Text):

Page Time: 0.0591s
Memory: 7.0418 MB (Peak: 7.3042 MB)
Queries (18, time: 0.0071s, 12.1%)