Entries in /proc/meminfo

Question

I can make sense of most of the information contained in /proc/meminfo like total memory, buffers, cache etc. Could you tell me what do the less obvious ones li

Answer 1

The canonical source of this information is /usr/src/linux/Documentation/filesystems/proc.txt. Specifically,

   AnonPages: Non-file backed pages mapped into userspace page tables
      Mapped: files which have been mmaped, such as libraries
        Slab: in-kernel data structures cache
NFS_Unstable: NFS pages sent to the server, but not yet committed to stable
        storage
      Bounce: Memory used for block device "bounce buffers"
VmallocTotal: total size of vmalloc memory area
 VmallocUsed: amount of vmalloc area which is used
VmallocChunk: largest contigious block of vmalloc area which is free