From: Pradeep Sawlani
On system like Android where most of the process are forked
from parent w/o execve, KSM can scan same page multiple times
in one scan cycle. There is no advantage in scanning same page
multiple times for merging. During testing with Android, it was
observed around 60% pages
From: Pradeep Sawlani
Patch uses two bits to detect if page is scanned, one bit for odd cycle
and other for even cycle. This adds one more bit in page flags and
overloads existing bit (PG_owner_priv_1).
Changes are based of 3.4.79 kernel, since I have used that for verification.
Detail
From: Pradeep Sawlani
Patch uses two bits to detect if page is scanned, one bit for odd cycle
and other for even cycle. This adds one more bit in page flags and
overloads existing bit (PG_owner_priv_1).
Changes are based of 3.4.79 kernel, since I have used that for verification.
Detail
> Re-sending this in plain text format (Apologies)
>
> Hello,
>
> In pursuit of saving memory on Android, I started experimenting with
> Kernel Same Page Merging(KSM).
> Number of pages shared because of KSM is reported by
> /sys/kernel/mm/pages_sharing.
> Documentation/vm/ksm.txt explains this as:
Re-sending this in plain text format (Apologies)
Hello,
In pursuit of saving memory on Android, I started experimenting with
Kernel Same Page Merging(KSM).
Number of pages shared because of KSM is reported by
/sys/kernel/mm/pages_sharing.
Documentation/vm/ksm.txt explains this as:
"pages_sharing
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