检查了phpfm日志目录，发现一些错误:

# tail www-error.log
[26-Jun-2014 13:39:34] PHP Warning: Unknown: Unable to allocate memory for pool. in Unknown on line 0
[26-Jun-2014 13:48:00] PHP Warning: Unknown: Unable to allocate memory for pool. in Unknown on line 0

解决方案

为了解决这个问题，需要优化了phpac。

在CentOS/redhat中,apc.php的路径是/etc/php.d/apc.php

主要优化这4个值

• apc.shm_size
• apc.num_files_hint
• apc.user_entries_hint
• apc.ttl

优化时需要重复测试。

参考：

[root@mysites php.d]# egrep -v '^;|^$' apc.ini
extension = apc.so
apc.enabled=1
apc.shm_segments=1
apc.shm_size=128M
apc.num_files_hint=20000
apc.user_entries_hint=20000
apc.ttl=7200
apc.use_request_time=1
apc.user_ttl=7200
apc.gc_ttl=3600
apc.cache_by_default=1
apc.filters
apc.mmap_file_mask=/tmp/apc.XXXXXX
apc.file_update_protection=2
apc.enable_cli=0
apc.max_file_size=20M
apc.stat=1
apc.stat_ctime=0
apc.canonicalize=0
apc.write_lock=1
apc.report_autofilter=0
apc.rfc1867=0
apc.rfc1867_prefix =upload_
apc.rfc1867_name=APC_UPLOAD_PROGRESS
apc.rfc1867_freq=0
apc.rfc1867_ttl=3600
apc.include_once_override=0
apc.lazy_classes=0
apc.lazy_functions=0
apc.coredump_unmap=0
apc.file_md5=0
apc.preload_path
[root@mysites php.d]#

然后重启apache和php fpm

service httpd restart

service php-fpm restart

查看APC状态

将apc.php复制到站点根目录：

cp /usr/share/php-pecl-apc/apc.php /var/www/html/website-name

修改apc控制面板的用户名和密码：（在apc.php文件中）

defaults('ADMIN_USERNAME','apc');                       // Admin Username
defaults('ADMIN_PASSWORD','password');          // Admin Password - CHANGE THIS TO ENABLE!!!

再次重新启动Apache和php fpm

service httpd restart
service php-fpm restart

访问apc控制面板：

http://服务器ip/apc.php