#1397
[Swap] How-to
# Determine the size of the swap file in megabytes and multiply by 1024 to determine the number of blocks. # For example, the block size of a 64 MB swap file is 65536 dd if=/dev/zero of=./swapfile bs=1024 count=65536 # Setup the swap file mkswap ./swapfile # enable the swap file immediately swapon ./swapfile
In /etc/fstab add :
/swapfile swap swap defaults 0 0
[Centos] Yum download RPM package Amazon Echo sur un Raspberry Pi, avec le mot clé de votre choix
https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-6
https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-7
https://blog.sleeplessbeastie.eu/2016/12/26/how-to-display-processes-using-swap-space/
Display processes using swap space
find /proc -maxdepth 2 -path "/proc/[0-9]*/status" -readable -exec awk -v FS=":" '{process[$1]=$2;sub(/^[ \t]+/,"",process[$1]);} END {if(process["VmSwap"] && process["VmSwap"] != "0 kB") printf "%10s %-30s %20s\n",process["Pid"],process["Name"],process["VmSwap"]}' '{}' \;Display processes using swap space sorted by used space
find /proc -maxdepth 2 -path "/proc/[0-9]*/status" -readable -exec awk -v FS=":" '{process[$1]=$2;sub(/^[ \t]+/,"",process[$1]);} END {if(process["VmSwap"] && process["VmSwap"] != "0 kB") printf "%10s %-30s %20s\n",process["Pid"],process["Name"],process["VmSwap"]}' '{}' \; | awk '{print $(NF-1),$0}' | sort -h | cut -d " " -f2-Display top ten processes using swap space with percentage values
find /proc -maxdepth 2 -path "/proc/[0-9]*/status" -readable -exec awk -v FS=":" -v TOTSWP="$(cat /proc/swaps | sed 1d | awk 'BEGIN{sum=0} {sum=sum+$(NF-2)} END{print sum}')" '{process[$1]=$2;sub(/^[ \t]+/,"",process[$1]);} END {if(process["VmSwap"] && process["VmSwap"] != "0 kB") {used_swap=process["VmSwap"];sub(/[ a-zA-Z]+/,"",used_swap);percent=(used_swap/TOTSWP*100); printf "%10s %-30s %20s %6.2f%\n",process["Pid"],process["Name"],process["VmSwap"],percent} }' '{}' \; | awk '{print $(NF-2),$0}' | sort -hr | head | cut -d " " -f2-Check swap (file and native) :