Merge branch 'master' of git.nussnougate.net:sevi-kun/scripts

Migrate repo from github to nussnougate

pve_mem-overview.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# Memory state with use of "free"
+MEM_TOTAL=$(free -m | awk '/^Mem:/ { print $2 } ')
+MEM_USED=$(free -m | awk '/^Mem:/ { print $3 } ')
+
+# ARC state with use of "/proc/spl/kstat/zfs/arcstats"
+FLOAT_ARC_USED=$(awk '/^size/ { print $3 / 1048576 }' < /proc/spl/kstat/zfs/arcstats)
+INT_ARC_USED=${FLOAT_ARC_USED%.*}
+
+# Calculated values
+MEM_SYSTEM=$(($MEM_USED-INT_ARC_USED))
+MEM_AVAILABLE=$(($MEM_TOTAL-$MEM_SYSTEM))
+
+# output
+echo -e "\nMemory overview:\n"
+printf "\nTotal Memory:,Used Memory:,Available Memory:,Memory ARC:,Memory Sys & KVM:\n$MEM_TOTAL MiB,$MEM_USED MiB,$MEM_AVAILABLE MiB,$INT_ARC_USED MiB,$MEM_SYSTEM MiB\n\n" | column -t -s ','
+
+echo -e "\nOutput definition:"
+
+echo -e "Total Memory:	Memory installed on system
+Available Memory:	['Total Memory' - 'Memory Sys & KVM']
+Memory ARC:	Memory used by ZFS RAM cache (ARC)
+Memory Sys & KVM:	Memory used by containers, VMs and system\n" | column -t -s '	'
+