projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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. | |
| 54a19b4d MCC |
37 | |
| 38 | - write 1 to run ksm, read 1 while ksm is running. | |
| 39 | - write 2 to disable ksm and unmerge all its pages. | |
| f00dc0ee PH |
40 | |
| 41 | sleep_millisecs: how many milliseconds ksm should sleep between | |
| 42 | scans. | |
| 43 | ||
| ee65728e | 44 | See Documentation/mm/ksm.rst for more information. |
| f00dc0ee PH |
45 | |
| 46 | What: /sys/kernel/mm/ksm/merge_across_nodes | |
| 47 | Date: January 2013 | |
| 48 | KernelVersion: 3.9 | |
| 49 | Contact: Linux memory management mailing list <linux-mm@kvack.org> | |
| 50 | Description: Control merging pages across different NUMA nodes. | |
| 51 | ||
| 52 | When it is set to 0 only pages from the same node are merged, | |
| 53 | otherwise pages from all nodes can be merged together (default). | |
| d21077fb SR |
54 | |
| 55 | What: /sys/kernel/mm/ksm/general_profit | |
| 56 | Date: April 2023 | |
| 57 | KernelVersion: 6.4 | |
| 58 | Contact: Linux memory management mailing list <linux-mm@kvack.org> | |
| 59 | Description: Measure how effective KSM is. | |
| 60 | general_profit: how effective is KSM. The formula for the | |
| 61 | calculation is in Documentation/admin-guide/mm/ksm.rst. |