uksmdstats

#!/bin/sh
export TEXTDOMAIN='uksmdstats'
export TEXTDOMAINDIR='/usr/share/locale'

if [ -f /sys/kernel/process_ksm/process_ksm_enable ] && [ -f /sys/kernel/process_ksm/process_ksm_disable ] && [ -f /sys/kernel/process_ksm/process_ksm_status ]; then
	echo "======================================================"
	echo "uksmd with uksmdstats support. Powered by CachyOS Team"
	echo "======================================================"
	while true; do
		echo "$( gettext "Full scans" ): $(cat /sys/kernel/mm/ksm/full_scans)"
		echo "$( gettext "Interval" ): $(cat /sys/kernel/mm/ksm/sleep_millisecs)" ms
		echo ":"
		echo "$( gettext "Max page sharing ratio" ): $(cat /sys/kernel/mm/ksm/max_page_sharing)"
		echo "$( gettext "Pages to scan" ): $(cat /sys/kernel/mm/ksm/pages_to_scan)"
		echo "$( gettext "Pages over ratio" ): $(cat /sys/kernel/mm/ksm/stable_node_chains)"
		echo "$( gettext "Duplicated pages" ): $(cat /sys/kernel/mm/ksm/stable_node_dups)"
		echo "$( gettext "Use zero pages" ): $(cat /sys/kernel/mm/ksm/use_zero_pages)"
		if [ "$(cat /sys/kernel/mm/ksm/pages_shared)" -gt 0  ] && [ "$(cat /sys/kernel/mm/ksm/pages_sharing)" -gt 0 ]; then
			echo "$( gettext "Sharing/shared ratio" ): $(awk "BEGIN {x=$(cat /sys/kernel/mm/ksm/pages_sharing);y=$(cat /sys/kernel/mm/ksm/pages_shared);print x/y}")"
			echo "$( gettext "Unshared/sharing ratio" ): $(awk "BEGIN {x=$(cat /sys/kernel/mm/ksm/pages_unshared);y=$(cat /sys/kernel/mm/ksm/pages_sharing);print x/y}")"
		else
			echo "$( gettext "Sharing/shared ratio" ): 0"
			echo "$( gettext "Unshared/sharing ratio" ): 0"
		fi
		echo ":"
		# formula MiB: $page_value * page size in Bytes / (1024 * 1024)
		# = $page_value * 4096 / (1024 / 1024) = $page_value / 256 (MiB)
		echo "$( gettext "Pages sharing" ): $(awk '{ print($0 / 256) }' /sys/kernel/mm/ksm/pages_sharing):MiB"
		echo "$( gettext "Pages shared" ): $(awk '{ print($0 / 256) }' /sys/kernel/mm/ksm/pages_shared):MiB"
		echo "$( gettext "Pages unshared" ): $(awk '{ print($0 / 256) }' /sys/kernel/mm/ksm/pages_unshared):MiB"
		echo ":"
		# https://www.kernel.org/doc/Documentation/admin-guide/mm/ksm.rst
		# general_profit =~ pages_sharing * sizeof(page) - (all_rmap_items) * sizeof(rmap_item);
		echo "$( gettext "General profit" ): $(awk '{ print($0 / 1024 / 1024) }' /sys/kernel/mm/ksm/general_profit):MiB"
		break
	done | column -t -s':'
else
	echo -e "$( gettext "The kernel you are using does not support" ) UKSMD."
fi