is it possible to decrease swap partition space in centos7

Question

Some of my friends told me that larger swap partition is very bad like thousands of web hits/min should be possible on my server,

The swap space is 16 GB, and i installed centos7 with "CWP" -> Control web panel

with enable csf, should i consider decrease swap partition space if it possible without formatting the server and how? or there is a solution to maintain this space not to harm the server,,

    [root@server ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on 

devtmpfs         16G     0   16G   0% /dev 

tmpfs            16G     0   16G   0% /dev/shm 

tmpfs            16G  201M   16G   2% /run 

tmpfs            16G     0   16G   0% /sys/fs/cgroup 

/dev/sda2       1.8T  256G  1.5T  15% / 

/dev/sdb1       1.8T  275G  1.5T  16% /backup 

/dev/sda5        16G   83M   15G   1% /tmp 

/dev/sda1       969M  187M  716M  21% /boot 

tmpfs           3.2G     0  3.2G   0% /run/user/0 

tmpfs           3.2G     0  3.2G   0% /run/user/1075 

[root@server ~]# 

Answer 1

I found that swap file i more effective and easier to do in my case, so i disabled the swap partition and created a swapfile instead..

Here how you do it exactly.