• HighTotal and HighFree — The total and free amount of memory, in kilobytes, that is notdirectly mapped into kernel space. The HighTotal value can vary based on the type of kernelused.• LowTotal and LowFree — The total and free amount of memory, in kilobytes, that is directlymapped into kernel space. The LowTotal value can vary based on the type of kernel used.• SwapTotal — The total amount of swap available, in kilobytes.• SwapFree — The total amount of swap free, in kilobytes.• Dirty — The total amount of memory, in kilobytes, waiting to be written back to the disk.• Writeback — The total amount of memory, in kilobytes, actively being written back to thedisk.• Mapped — The total amount of memory, in kilobytes, which have been used to map devices,files, or libraries using the mmap command.• Slab — The total amount of memory, in kilobytes, used by the kernel to cache data structuresfor its own use.• Committed_AS — The total amount of memory, in kilobytes, estimated to complete theworkload. This value represents the worst case scenario value, and also includes swapmemory.• PageTables — The total amount of memory, in kilobytes, dedicated to the lowest page tablelevel.• VMallocTotal — The total amount of memory, in kilobytes, of total allocated virtual addressspace.• VMallocUsed — The total amount of memory, in kilobytes, of used virtual address space.• VMallocChunk — The largest contiguous block of memory, in kilobytes, of available virtualaddress space.• HugePages_Total — The total number of hugepages for the system. The number is derivedby dividing Hugepagesize by the megabytes set aside for hugepages specified in/proc/sys/vm/hugetlb_pool. This statistic only appears on the x86, Itanium, and AMD64architectures.• HugePages_Free — The total number of hugepages available for the system. This statisticonly appears on the x86, Itanium, and AMD64 architectures.• Hugepagesize — The size for each hugepages unit in kilobytes. By default, the value is 4096KB on uniprocessor kernels for 32 bit architectures. For SMP, hugemem kernels, and AMD64,the default is 2048 KB. For Itanium architectures, the default is 262144 KB. This statistic onlyappears on the x86, Itanium, and AMD64 architectures./proc/misc59
