php – APC服务器缓存碎片

卸载APC并使用3.1.7版本(3.1.9是当前稳定版本)进行重建,修复了缓存slam bug和numerous other issues.

运行最新的PHP 5.3.6也会获得更好的结果每个版本在与APC交互时变得更好(当PHP 6出现时它们将完全集成).

另外,请查看配置文件和apc.slam_defense设置,并将其提升到30或40左右.

对于真正的性能提升,将apc.stat设置为0,它将删除检查文件新版本的过程.如果您对网站进行了大量更改,则在缓存过期之前不会更新. (我的用户感到沮丧所以我必须将它设置为1)

setting apc.slam_defense to 75 would
mean that there is a 75% chance that
the process will not cache an uncached
file. So,the higher the setting the
greater the defense against cache
slams. Setting this to 0 disables this
feature.

降低apc.user_ttl,这是W3 Total Cache使用的,它是更动态的东西.保持apc.ttl高,因为这将是你没有真正改变的WordPress核心文件和主题文件.

我假设你的设置对象和数据库缓存在W3到APC.对于您的服务器大小,我会将页面缓存设置为磁盘增强.还记得你可以在W3中设置动态内容的ttl.

这是我在带有12G Ram的专用服务器上运行一个非常大的WordPress Multisite.即使内存有限,也不要害怕增加缓存大小.如果需要,您可以随时返回.我的设置为512M,但它的使用时间从未超过120M.

; configuration for php apc module
extension = apc.so
apc.enabled = 1
apc.shm_segments = 1
apc.shm_size = 512M
apc.optimization = 0
apc.num_files_hint = 2700
apc.user_entries_hint = 2700
apc.ttl = 7200
apc.user_ttl = 3600
apc.gc_ttl = 600
apc.cache_by_default = 1
apc.slam_defense = 1
apc.use_request_time = 1
apc.mmap_file_mask = /dev/zero
apc.file_update_protection = 2
apc.enable_cli = 0
apc.max_file_size = 2M
apc.stat = 1
apc.write_lock = 1
apc.report_autofilter = 0
apc.include_once_override = 0
apc.rfc1867 = 0
apc.rfc1867_prefix = "upload_"
apc.rfc1867_name = "APC_UPLOAD_PROGRESS"
apc.rfc1867_freq = 0
apc.localcache = 1
apc.localcache.size = 1350
apc.coredump_unmap = 0
apc.stat_ctime = 0