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r: 356583
b: refs/heads/master
c: f00dc0e
h: refs/heads/master
i:
  356581: 6480b74
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  356575: d7d0fcf
v: v3
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Petr Holasek authored and Linus Torvalds committed Feb 24, 2013
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2 changes: 1 addition & 1 deletion [refs]
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refs/heads/master: 90bd6fd31c8097ee4ddcb74b7e08363134863de5
refs/heads/master: f00dc0ee5a8e7fd513b05a2446c26be203c05004
52 changes: 52 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-kernel-mm-ksm
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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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