线上一台服务器kswapd0占用大量的cpu资源，导致负载过高，什么是kswapd0？ Linux uses kswapd for virtual memory management such that pages that havebeen recently accessed are kept in memory and less active pages are paged outto disk. (what is a page?)...

准备做网站迁移的，结果上服务器发现8G内存基本都跑完了，这台服务器只跑了php和nginx，进程数nginx只开了8个，php只开了66个，很奇怪，8G内存都被什么程序占用了？ 查看内存： 具体怎么查看内存这张图说明的很清楚： 如果图不清晰请参考:http://www.redbooks.ibm.c...