2023-08-30 17:31:07 +02:00
|
|
|
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/mm/ksm.rst 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).
|
2023-10-24 12:59:35 +02:00
|
|
|
|
|
|
|
|
What: /sys/kernel/mm/ksm/general_profit
|
|
|
|
|
Date: April 2023
|
|
|
|
|
KernelVersion: 6.4
|
|
|
|
|
Contact: Linux memory management mailing list <linux-mm@kvack.org>
|
|
|
|
|
Description: Measure how effective KSM is.
|
|
|
|
|
general_profit: how effective is KSM. The formula for the
|
|
|
|
|
calculation is in Documentation/admin-guide/mm/ksm.rst.
|
