php fpm, opcache and huge pages












0















I'm using php-fpm configured to use file cache like this (php.ini): 



opcache.enable=1

opcache.file_cache=/var/lib/hugetlbfs/group/www-data/pagesize-2MB

opcache.huge_code_pages=1


and by using debug.php: 



<H1>This is normal HTML</H1>

But the <U>following table</U> is generated by PHP:

<?php

    phpinfo();

?>


I can see that Zend OPcache is up and running, the opcache is enabled and using my configuration; also opcache-gui is showing the memory being used. When I'm checking /var/lib/hugetlbfs/group/www-data/pagesize-2MB I discover that contains no file (sudo find /var/lib/hugetlbfs/group/www-data/pagesize-2MB -type f) and has 0 size (sudo du -sh /var/lib/hugetlbfs/group/www-data/pagesize-2MB); this also happens even while my php website is continuously stressed with requests. I do find though many directories (e.g. /var/lib/hugetlbfs/group/www-data/pagesize-2MB/0c5f279af5b0301d11f2fde4c3271f7d/.../php-pages/wordpress/wp-content) while also the huge code memory seems to be used: 



grep Huge /proc/meminfo

AnonHugePages:     14336 kB

ShmemHugePages:        0 kB

HugePages_Total:      33

HugePages_Free:       18

HugePages_Rsvd:       18

HugePages_Surp:        1

Hugepagesize:       2048 kB


Q: shouldn't that pagesize-2MB directory contain some cached files? If not then why not? If yes then how should I fix this missing cached files?




PS: my configuration is below




  • Ubuntu 16.04.5 LTS

  • PHP 7.0.32-0ubuntu0.16.04.1

  • using /usr/sbin/php-fpm7.0






php7 huge-pages php-opcache







share|improve this question





























    0















    I'm using php-fpm configured to use file cache like this (php.ini): 



    opcache.enable=1
    
opcache.file_cache=/var/lib/hugetlbfs/group/www-data/pagesize-2MB
    
opcache.huge_code_pages=1


    and by using debug.php: 



    <H1>This is normal HTML</H1>
    
But the <U>following table</U> is generated by PHP:
    
<?php
    
    phpinfo();
    
?>


    I can see that Zend OPcache is up and running, the opcache is enabled and using my configuration; also opcache-gui is showing the memory being used. When I'm checking /var/lib/hugetlbfs/group/www-data/pagesize-2MB I discover that contains no file (sudo find /var/lib/hugetlbfs/group/www-data/pagesize-2MB -type f) and has 0 size (sudo du -sh /var/lib/hugetlbfs/group/www-data/pagesize-2MB); this also happens even while my php website is continuously stressed with requests. I do find though many directories (e.g. /var/lib/hugetlbfs/group/www-data/pagesize-2MB/0c5f279af5b0301d11f2fde4c3271f7d/.../php-pages/wordpress/wp-content) while also the huge code memory seems to be used: 



    grep Huge /proc/meminfo
    
AnonHugePages:     14336 kB
    
ShmemHugePages:        0 kB
    
HugePages_Total:      33
    
HugePages_Free:       18
    
HugePages_Rsvd:       18
    
HugePages_Surp:        1
    
Hugepagesize:       2048 kB


    Q: shouldn't that pagesize-2MB directory contain some cached files? If not then why not? If yes then how should I fix this missing cached files?




    PS: my configuration is below




    • Ubuntu 16.04.5 LTS

    • PHP 7.0.32-0ubuntu0.16.04.1

    • using /usr/sbin/php-fpm7.0






    php7 huge-pages php-opcache







    share|improve this question



























      0












      0








      0








      I'm using php-fpm configured to use file cache like this (php.ini): 



      opcache.enable=1
      
opcache.file_cache=/var/lib/hugetlbfs/group/www-data/pagesize-2MB
      
opcache.huge_code_pages=1


      and by using debug.php: 



      <H1>This is normal HTML</H1>
      
But the <U>following table</U> is generated by PHP:
      
<?php
      
    phpinfo();
      
?>


      I can see that Zend OPcache is up and running, the opcache is enabled and using my configuration; also opcache-gui is showing the memory being used. When I'm checking /var/lib/hugetlbfs/group/www-data/pagesize-2MB I discover that contains no file (sudo find /var/lib/hugetlbfs/group/www-data/pagesize-2MB -type f) and has 0 size (sudo du -sh /var/lib/hugetlbfs/group/www-data/pagesize-2MB); this also happens even while my php website is continuously stressed with requests. I do find though many directories (e.g. /var/lib/hugetlbfs/group/www-data/pagesize-2MB/0c5f279af5b0301d11f2fde4c3271f7d/.../php-pages/wordpress/wp-content) while also the huge code memory seems to be used: 



      grep Huge /proc/meminfo
      
AnonHugePages:     14336 kB
      
ShmemHugePages:        0 kB
      
HugePages_Total:      33
      
HugePages_Free:       18
      
HugePages_Rsvd:       18
      
HugePages_Surp:        1
      
Hugepagesize:       2048 kB


      Q: shouldn't that pagesize-2MB directory contain some cached files? If not then why not? If yes then how should I fix this missing cached files?




      PS: my configuration is below




      • Ubuntu 16.04.5 LTS

      • PHP 7.0.32-0ubuntu0.16.04.1

      • using /usr/sbin/php-fpm7.0






      php7 huge-pages php-opcache







      share|improve this question
















      I'm using php-fpm configured to use file cache like this (php.ini): 



      opcache.enable=1
      
opcache.file_cache=/var/lib/hugetlbfs/group/www-data/pagesize-2MB
      
opcache.huge_code_pages=1


      and by using debug.php: 



      <H1>This is normal HTML</H1>
      
But the <U>following table</U> is generated by PHP:
      
<?php
      
    phpinfo();
      
?>


      I can see that Zend OPcache is up and running, the opcache is enabled and using my configuration; also opcache-gui is showing the memory being used. When I'm checking /var/lib/hugetlbfs/group/www-data/pagesize-2MB I discover that contains no file (sudo find /var/lib/hugetlbfs/group/www-data/pagesize-2MB -type f) and has 0 size (sudo du -sh /var/lib/hugetlbfs/group/www-data/pagesize-2MB); this also happens even while my php website is continuously stressed with requests. I do find though many directories (e.g. /var/lib/hugetlbfs/group/www-data/pagesize-2MB/0c5f279af5b0301d11f2fde4c3271f7d/.../php-pages/wordpress/wp-content) while also the huge code memory seems to be used: 



      grep Huge /proc/meminfo
      
AnonHugePages:     14336 kB
      
ShmemHugePages:        0 kB
      
HugePages_Total:      33
      
HugePages_Free:       18
      
HugePages_Rsvd:       18
      
HugePages_Surp:        1
      
Hugepagesize:       2048 kB


      Q: shouldn't that pagesize-2MB directory contain some cached files? If not then why not? If yes then how should I fix this missing cached files?




      PS: my configuration is below




      • Ubuntu 16.04.5 LTS

      • PHP 7.0.32-0ubuntu0.16.04.1

      • using /usr/sbin/php-fpm7.0






      php7 huge-pages php-opcache




      php7 huge-pages php-opcache






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 min ago







      adrhc

















      asked Jan 8 at 21:42









      adrhcadrhc

      240111




      240111






















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