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Beta Branch add PHP_PGO_ALWAYS='n' variable in 123.09beta01

Discussion in 'Centmin Mod Github Commits' started by eva2000, Apr 4, 2019.

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  1. Apr 4, 2019 #1
    eva2000

    eva2000 Administrator Staff Member

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    add PHP_PGO_ALWAYS='n' variable in 123.09beta01

    for PHP 7+ installs, setting PHP_PGO='y' will enable Profile Guided Optimizations for 5-25% better PHP performance but it takes longer for PHP to compile so by default PHP_PGO only enables if you have more than 2 cpu threads on server detected. If your server has 1 cpu core, then PHP_PGO is auto disabled even if you try to enable it. But this update adds a variable PHP_PGO_ALWAYS='n' by default which when set to PHP_PGO_ALWAYS='y' in persistent config file /etc/centminmod/custom_config.inc will override and enable PHP_PGO enable when PHP_PGO='y' set for 1 cpu thread servers too. PHP compiles times can be between 60-90% slower on 1 cpu core servers as PHP compile times depend on how many cpu cores and clock speed of those cpu cores. More cpu cores that are high cpu clock speed = faster PHP compile times.

    Continue reading...

    123.09beta01 branch
     
  2. Apr 4, 2019 #2
    pamamolf

    pamamolf Premium Member Premium Member

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    Hello :)

    Is there any topic related to PHP PGO with more info like what is it and what it does and which are the supported php versions?

    Looking to try it for a first time now but i don't know if that can conflict with any script/software/platform.....?

    Thank you
     
  3. Apr 4, 2019 #3
    eva2000

    eva2000 Administrator Staff Member

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    PGO is referenced in https://centminmod.com/perf/ or linked to at https://community.centminmod.com/th...ptimizations-to-boost-php-7-performance.8961/
    There's no conflicts just Profile Guided Optimizations for PHP 7+ won't accelerate all PHP code paths just ones optimized for. So you either get no change in performance or a boost in performance.
     
  4. Apr 4, 2019 #4
    pamamolf

    pamamolf Premium Member Premium Member

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    Does that means that the php code of the script/platform should have something related to it so it can get optimized or that the PGO will optimize some paths related to something else related?
     
  5. Apr 4, 2019 #5
    eva2000

    eva2000 Administrator Staff Member

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  6. Apr 4, 2019 #6
    pamamolf

    pamamolf Premium Member Premium Member

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    As the performance can't be worst in any case then i will try it :)
     
  7. May 23, 2019 #7
    pamamolf

    pamamolf Premium Member Premium Member

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    Do i need to set also the path?

     
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