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f00dc0ee PH |
1 | What: /sys/kernel/mm/ksm |
2 | Date: September 2009 | |
3 | KernelVersion: 2.6.32 | |
4 | Contact: Linux memory management mailing list <linux-mm@kvack.org> | |
5 | Description: Interface for Kernel Samepage Merging (KSM) | |
6 | ||
7 | What: /sys/kernel/mm/ksm/full_scans | |
8 | What: /sys/kernel/mm/ksm/pages_shared | |
9 | What: /sys/kernel/mm/ksm/pages_sharing | |
10 | What: /sys/kernel/mm/ksm/pages_to_scan | |
11 | What: /sys/kernel/mm/ksm/pages_unshared | |
12 | What: /sys/kernel/mm/ksm/pages_volatile | |
13 | What: /sys/kernel/mm/ksm/run | |
14 | What: /sys/kernel/mm/ksm/sleep_millisecs | |
15 | Date: September 2009 | |
16 | Contact: Linux memory management mailing list <linux-mm@kvack.org> | |
17 | Description: Kernel Samepage Merging daemon sysfs interface | |
18 | ||
19 | full_scans: how many times all mergeable areas have been | |
20 | scanned. | |
21 | ||
22 | pages_shared: how many shared pages are being used. | |
23 | ||
24 | pages_sharing: how many more sites are sharing them i.e. how | |
25 | much saved. | |
26 | ||
27 | pages_to_scan: how many present pages to scan before ksmd goes | |
28 | to sleep. | |
29 | ||
30 | pages_unshared: how many pages unique but repeatedly checked | |
31 | for merging. | |
32 | ||
33 | pages_volatile: how many pages changing too fast to be placed | |
34 | in a tree. | |
35 | ||
36 | run: write 0 to disable ksm, read 0 while ksm is disabled. | |
37 | write 1 to run ksm, read 1 while ksm is running. | |
38 | write 2 to disable ksm and unmerge all its pages. | |
39 | ||
40 | sleep_millisecs: how many milliseconds ksm should sleep between | |
41 | scans. | |
42 | ||
43 | See Documentation/vm/ksm.txt for more information. | |
44 | ||
45 | What: /sys/kernel/mm/ksm/merge_across_nodes | |
46 | Date: January 2013 | |
47 | KernelVersion: 3.9 | |
48 | Contact: Linux memory management mailing list <linux-mm@kvack.org> | |
49 | Description: Control merging pages across different NUMA nodes. | |
50 | ||
51 | When it is set to 0 only pages from the same node are merged, | |
52 | otherwise pages from all nodes can be merged together (default). |