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- What: /sys/kernel/mm/ksm
- Date: September 2009
- KernelVersion: 2.6.32
- Contact: Linux memory management mailing list <linux-mm@kvack.org>
- Description: Interface for Kernel Samepage Merging (KSM)
- What: /sys/kernel/mm/ksm/full_scans
- What: /sys/kernel/mm/ksm/pages_shared
- What: /sys/kernel/mm/ksm/pages_sharing
- What: /sys/kernel/mm/ksm/pages_to_scan
- What: /sys/kernel/mm/ksm/pages_unshared
- What: /sys/kernel/mm/ksm/pages_volatile
- What: /sys/kernel/mm/ksm/run
- What: /sys/kernel/mm/ksm/sleep_millisecs
- Date: September 2009
- Contact: Linux memory management mailing list <linux-mm@kvack.org>
- Description: Kernel Samepage Merging daemon sysfs interface
- full_scans: how many times all mergeable areas have been
- scanned.
- pages_shared: how many shared pages are being used.
- pages_sharing: how many more sites are sharing them i.e. how
- much saved.
- pages_to_scan: how many present pages to scan before ksmd goes
- to sleep.
- pages_unshared: how many pages unique but repeatedly checked
- for merging.
- pages_volatile: how many pages changing too fast to be placed
- in a tree.
- run: write 0 to disable ksm, read 0 while ksm is disabled.
- write 1 to run ksm, read 1 while ksm is running.
- write 2 to disable ksm and unmerge all its pages.
- sleep_millisecs: how many milliseconds ksm should sleep between
- scans.
- See Documentation/vm/ksm.txt for more information.
- What: /sys/kernel/mm/ksm/merge_across_nodes
- Date: January 2013
- KernelVersion: 3.9
- Contact: Linux memory management mailing list <linux-mm@kvack.org>
- Description: Control merging pages across different NUMA nodes.
- When it is set to 0 only pages from the same node are merged,
- otherwise pages from all nodes can be merged together (default).
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