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еÄKernelÆoÓÃHugepageÒѾ­±aµÃdz£ÈÝÒ×ÁË£¬ÒÔÎҵĿª¢ÐeÄa»uΪÀý(Ubuntu Server 14.04£¬Kernel 3.13.0-45), Èç¹uÎÒÃDze¿´ÄÚ´aeÐÅÏ¢£º

    $ cat /proc/meminfo | grep Huge
    AnonHugePages:  444416 kB
    HugePages_Total:    0
    HugePages_Free:    0
    HugePages_Rsvd:    0
    HugePages_Surp:    0
    Hugepagesize:    2048 kB

¿É¼uÒ»¸oHugepageµÄsizeÊÇ2MB, ¶øµ±Ç°²¢Ã»ÓÐÆoÓÃHugePages. ÏÖÔÚÈÃÎÒÃÇÏȱaÒePHP RC4, ¼ÇµÃÒ»¶¨²»Òª¼Ó£º ¨Cdisable-huge-code-pages £¨Õa¸oÐÂÌØÐÔÊÇĬÈÏÆoÓõģ¬ Äa¼ÓÁËÕa¸o¾Í¹ØÁË£(C)

È»ºoÅaÖÃopcache, ´ÓPHP5.5¿ªÊ¼OpcacheÒѾ­ÊÇĬÈÏÆoÓñaÒeµÄ£¬µ«ÊÇÊDZaÒe¶¯Ì¬¿aµÄ£¬ ËuÒÔÎÒÃÇ»¹ÊÇÒªÔÚphp.iniÖÐÅaÖüÓÔØÏ¡£

    zend_extension=opcache.so

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    opcache.huge_code_pages=1

ÏÖÔÚÈÃÎÒÃÇÅaÖÃOS£¬ *ÖÅaÒ»Ð(C)Hugepages£º

    $ sudo sysctl vm.nr_hugepages=128
    vm.nr_hugepages = 128

ÏÖÔÚÈÃÎÒÃÇÔٴμi²eÄÚ´aeÐÅÏ¢:

    $ cat /proc/meminfo | grep Huge
    AnonHugePages:  444416 kB
    HugePages_Total:   128
    HugePages_Free:   128
    HugePages_Rsvd:    0
    HugePages_Surp:    0
    Hugepagesize:    2048 kB

¿ÉÒÔ¿´µ½ÎÒÃÇ*ÖÅaµÄ128¸oHugepagesÒѾ­¾ÍÐ÷ÁË£¬ È»ºoÎÒÃÇÀ´Æo¶¯php-fpm:

    $ /home/huixinchen/local/php7/sbin/php-fpm
    [01-Oct-2015 09:33:27] NOTICE: [pool www] 'user' directive is ignored when FPM is not running as root
    [01-Oct-2015 09:33:27] NOTICE: [pool www] 'group' directive is ignored when FPM is not running as root

ÏÖÔÚ£¬ Ôٴμi²eÄÚ´aeÐÅÏ¢:

    $ cat /proc/meminfo | grep Huge
    AnonHugePages:  411648 kB
    HugePages_Total:   128
    HugePages_Free:   113
    HugePages_Rsvd:    27
    HugePages_Surp:    0
    Hugepagesize:    2048 kB

˵µ½ÕaÀi£¬Èç¹uHugepages¿ÉÓ㬠ÆaʵOpcacheÒ²»aÓÃHugepagesÀ´´ae´¢opcodes»º´ae£¬ ËuÒÔΪÁËÑeÖ¤opcache.huge_code_pagesÈʵÉuЧ£¬ ÎÒÃDz»Á¹Ø±Õopcache.huge_code_pages, È»ºoÔÙÆo¶¯Ò»´Îºo¿´ÄÚ´aeÐÅÏ¢£º

    $ cat /proc/meminfo | grep Huge
    AnonHugePages:  436224 kB
    HugePages_Total:   128
    HugePages_Free:   117
    HugePages_Rsvd:    27
    HugePages_Surp:    0
    Hugepagesize:    2048 kB

¿É¼u¿ªÆoÁËhuge_code_pagesÒÔºo£¬ fpmÆo¶¯ºo¶aÓÃÁË4¸opages, ÏÖÔÚÎÒÃǼi²eÏÂphp-fpmµÄtext´oС£º

    $ size /home/huixinchen/local/php7/sbin/php-fpm
      text    data     bss     dec     hex   filename
    10114565   695200   131528   10941293   a6f36d   /home/huixinchen/local/php7/sbin/php-fpm

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