epoll max_user_watches

cxytz01

man epoll 的一段话，一段看不懂。

   
/proc interfaces
       The following interfaces can be used to limit the amount of kernel memory consumed by epoll:

       /proc/sys/fs/epoll/max_user_watches (since Linux 2.6.2
              This specifies a limit on the total number of file descriptors that a user can register across all epoll instances on the system.  The limit is per real user ID.  Each registered file descriptor costs roughly 90 bytes
              on a 32-bit kernel, and roughly 160 bytes on a 64-bit kernel. Currently, the default value for max_user_watches is 1/25 (4%) of the available low memory, divided by the registration cost in bytes.

翻译下红色标注语句的意思，8G-64bit kernel 可以有多少max_user_watcher?

cxytz01

顶~~~~~~~~~~~~~~~~~~~~~~~~~~~，顶到有人来。