php, opcache and linux huge pages
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
asked Jan 8 at 21:42
adrhcadrhc
247111
add a comment |
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
asked Jan 8 at 21:42
adrhcadrhc
247111
add a comment |
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
asked Jan 8 at 21:42
adrhcadrhc
247111
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
asked Jan 8 at 21:42
adrhcadrhc
247111
asked Jan 8 at 21:42
adrhcadrhc
247111
edited 6 hours ago
adrhc
asked Jan 8 at 21:42
adrhcadrhc
247111
asked Jan 8 at 21:42
adrhcadrhc
247111
asked Jan 8 at 21:42
adrhcadrhc
247111
247111
add a comment |
add a comment |
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