Server response time issue

[faruk sayar]

hello,
I have vps license on cpanel, for this server ; 4cpu 4gb ram
There is only one wordpress website on this server (this theme nielsen ), also website is new, no user no guest.
when I test it on google pagespeed,
google says " High server response time" its 0,56s or 0,54s
but when I run this website on nginx, Google doesnt warn me about "Server response time" but gives low point.
also still I have "lsphp5 high cpu problem" I have mentioned about this issue to @NiteWave he said, its about script issue, I guess my theme works heavy and slow, but I cant optimize it for now.
if I use cloudflare and loadbalancer, do you think this things works ?
using:
apache 2.4
php 5.4
xcacahe, zend, memcache
all litespeed settings default.
thanks.

 

[NiteWave]

in this case, clodflare won't help you, since the bottlenack is php-mysql.

before discussing about "lsphp5 high cpu", need know or estimate the traffic of the web site.
if the traffic is low, I see no much benefit to run litespeed, sticking to apache should be enough.

if apache can't run well when high traffic, then consider litespeed, so you can compare both well.

when traffic is low. running apache is a better choice since you can optimize the php/mysql during the time and the optimization will benefit litespeed as well(if you later switch to litespeed). php/mysql is usually bottle neck and common between apache and litespeed.