5bbe1ec11f
Describe NUMA node sysfs files/attributes. Note that for the specific dates and contacts I couldn't find, I left it as default for Oct 2002 and linux-mm. Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
101 lines
3.2 KiB
Plaintext
101 lines
3.2 KiB
Plaintext
What: /sys/devices/system/node/possible
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Nodes that could be possibly become online at some point.
|
|
|
|
What: /sys/devices/system/node/online
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Nodes that are online.
|
|
|
|
What: /sys/devices/system/node/has_normal_memory
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Nodes that have regular memory.
|
|
|
|
What: /sys/devices/system/node/has_cpu
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Nodes that have one or more CPUs.
|
|
|
|
What: /sys/devices/system/node/has_high_memory
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Nodes that have regular or high memory.
|
|
Depends on CONFIG_HIGHMEM.
|
|
|
|
What: /sys/devices/system/node/nodeX
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
When CONFIG_NUMA is enabled, this is a directory containing
|
|
information on node X such as what CPUs are local to the
|
|
node. Each file is detailed next.
|
|
|
|
What: /sys/devices/system/node/nodeX/cpumap
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
The node's cpumap.
|
|
|
|
What: /sys/devices/system/node/nodeX/cpulist
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
The CPUs associated to the node.
|
|
|
|
What: /sys/devices/system/node/nodeX/meminfo
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Provides information about the node's distribution and memory
|
|
utilization. Similar to /proc/meminfo, see Documentation/filesystems/proc.txt
|
|
|
|
What: /sys/devices/system/node/nodeX/numastat
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
The node's hit/miss statistics, in units of pages.
|
|
See Documentation/numastat.txt
|
|
|
|
What: /sys/devices/system/node/nodeX/distance
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
Distance between the node and all the other nodes
|
|
in the system.
|
|
|
|
What: /sys/devices/system/node/nodeX/vmstat
|
|
Date: October 2002
|
|
Contact: Linux Memory Management list <linux-mm@kvack.org>
|
|
Description:
|
|
The node's zoned virtual memory statistics.
|
|
This is a superset of numastat.
|
|
|
|
What: /sys/devices/system/node/nodeX/compact
|
|
Date: February 2010
|
|
Contact: Mel Gorman <mel@csn.ul.ie>
|
|
Description:
|
|
When this file is written to, all memory within that node
|
|
will be compacted. When it completes, memory will be freed
|
|
into blocks which have as many contiguous pages as possible
|
|
|
|
What: /sys/devices/system/node/nodeX/scan_unevictable_pages
|
|
Date: October 2008
|
|
Contact: Lee Schermerhorn <lee.schermerhorn@hp.com>
|
|
Description:
|
|
When set, it triggers scanning the node's unevictable lists
|
|
and move any pages that have become evictable onto the respective
|
|
zone's inactive list. See mm/vmscan.c
|
|
|
|
What: /sys/devices/system/node/nodeX/hugepages/hugepages-<size>/
|
|
Date: December 2009
|
|
Contact: Lee Schermerhorn <lee.schermerhorn@hp.com>
|
|
Description:
|
|
The node's huge page size control/query attributes.
|
|
See Documentation/vm/hugetlbpage.txt |