Documentation/ABI/stable/sysfs-devices-node

   1 What:           /sys/devices/system/node/possible
   2 Date:           October 2002
   3 Contact:        Linux Memory Management list <[email protected]>
   4 Description:
   5                 Nodes that could be possibly become online at some point.
   6
   7 What:           /sys/devices/system/node/online
   8 Date:           October 2002
   9 Contact:        Linux Memory Management list <[email protected]>
  10 Description:
  11                 Nodes that are online.
  12
  13 What:           /sys/devices/system/node/has_normal_memory
  14 Date:           October 2002
  15 Contact:        Linux Memory Management list <[email protected]>
  16 Description:
  17                 Nodes that have regular memory.
  18
  19 What:           /sys/devices/system/node/has_cpu
  20 Date:           October 2002
  21 Contact:        Linux Memory Management list <[email protected]>
  22 Description:
  23                 Nodes that have one or more CPUs.
  24
  25 What:           /sys/devices/system/node/has_high_memory
  26 Date:           October 2002
  27 Contact:        Linux Memory Management list <[email protected]>
  28 Description:
  29                 Nodes that have regular or high memory.
  30                 Depends on CONFIG_HIGHMEM.
  31
  32 What:           /sys/devices/system/node/nodeX
  33 Date:           October 2002
  34 Contact:        Linux Memory Management list <[email protected]>
  35 Description:
  36                 When CONFIG_NUMA is enabled, this is a directory containing
  37                 information on node X such as what CPUs are local to the
  38                 node. Each file is detailed next.
  39
  40 What:           /sys/devices/system/node/nodeX/cpumap
  41 Date:           October 2002
  42 Contact:        Linux Memory Management list <[email protected]>
  43 Description:
  44                 The node's cpumap.
  45
  46 What:           /sys/devices/system/node/nodeX/cpulist
  47 Date:           October 2002
  48 Contact:        Linux Memory Management list <[email protected]>
  49 Description:
  50                 The CPUs associated to the node.
  51
  52 What:           /sys/devices/system/node/nodeX/meminfo
  53 Date:           October 2002
  54 Contact:        Linux Memory Management list <[email protected]>
  55 Description:
  56                 Provides information about the node's distribution and memory
  57                 utilization. Similar to /proc/meminfo, see Documentation/filesystems/proc.txt
  58
  59 What:           /sys/devices/system/node/nodeX/numastat
  60 Date:           October 2002
  61 Contact:        Linux Memory Management list <[email protected]>
  62 Description:
  63                 The node's hit/miss statistics, in units of pages.
  64                 See Documentation/numastat.txt
  65
  66 What:           /sys/devices/system/node/nodeX/distance
  67 Date:           October 2002
  68 Contact:        Linux Memory Management list <[email protected]>
  69 Description:
  70                 Distance between the node and all the other nodes
  71                 in the system.
  72
  73 What:           /sys/devices/system/node/nodeX/vmstat
  74 Date:           October 2002
  75 Contact:        Linux Memory Management list <[email protected]>
  76 Description:
  77                 The node's zoned virtual memory statistics.
  78                 This is a superset of numastat.
  79
  80 What:           /sys/devices/system/node/nodeX/compact
  81 Date:           February 2010
  82 Contact:        Mel Gorman <[email protected]>
  83 Description:
  84                 When this file is written to, all memory within that node
  85                 will be compacted. When it completes, memory will be freed
  86                 into blocks which have as many contiguous pages as possible
  87
  88 What:           /sys/devices/system/node/nodeX/scan_unevictable_pages
  89 Date:           October 2008
  90 Contact:        Lee Schermerhorn <[email protected]>
  91 Description:
  92                 When set, it triggers scanning the node's unevictable lists
  93                 and move any pages that have become evictable onto the respective
  94                 zone's inactive list. See mm/vmscan.c
  95
  96 What:           /sys/devices/system/node/nodeX/hugepages/hugepages-<size>/
  97 Date:           December 2009
  98 Contact:        Lee Schermerhorn <[email protected]>
  99 Description:
 100                 The node's huge page size control/query attributes.
 101                 See Documentation/vm/hugetlbpage.txt