0, Check swap status
swapon -s
1, Check file system
df
2, Create and Enable Swap file The filesize of swap space is 2048k(2GB).
dd if=/dev/zero of=/swapfile bs=1024 count=2048k
mkswap /swapfile
swapon /swapfile
3, Make it effect when sys reboot
echo "/swapfile swap swap defaults 0 0" >> /etc/fstab
chown root:root /swapfile
chmod 0600 /swapfile
4, Check swap space status
swapon -s
or
free -m
4, Adjust for system
cat /proc/sys/vm/swappiness
a value from 0 to 100,if comes to 100,it means system use swap often and usually, too soon. RAM is much faster than swap space.
If needed , it can changed by:
sysctl vm.swappiness=10
Or change it permanently:
echo "vm.swappiness=10" >> /etc/sysctl.conf
5, Others
df -Thi
Count partition inode usage.
find / -xdev -printf '%h\n' | sort | uniq -c | sort -k 1 -n
inode useage count.
end