Apache, php, mysql working slow on hosting and wordpress

[tinu]

Hello Mustafa,

I am running wordpress on a single website hosted on a vps from reputed hosting.
I have 4gb ram and ssd hdd specially for this ecommerce website and i am running wordpress only.
I am having issues in speed I tried increasing php memory from 32mb to 3gb. I tried optimize apache speed but even then its running slow.
I nearly tried all server tricks in kloxo mrpanel. Panel runs smooth but website not. can you please tell me what to do. or what am I missing. If you want i can give you server access.

[MRatWork]

Inform here 'sh /script/sysinfo'.

[tinu]

[root@vps~]# sh /script/sysinfo

A. Kloxo-MR: 7.0.0.b-2015092401
   - Web: hiawatha-9.14.0-f.6.mr.el6.x86_64
   - PHP: php54s-5.4.44-1.ius.el6 (cgi mode)
B. Plateform:
   - OS: CentOS release 6.7 (Final) x86_64
   - Hostname: vps.net
C. Services:
   1. MySQL: MariaDB-server-10.0.21-1.el6.x86_64
   2. PHP:
      - Branch: php54-cli-5.4.45-1.ius.el6.x86_64
      - Multiple:
        * php55m-5.5.28-1.ius.el6
        * php56m-5.6.12-1.ius.el6
      - Used: php56m
   3. Httpd: httpd24u-2.4.16-2.ius.el6.x86_64
      - PHP Type: php-fpm_event
   4. Lighttpd: --uninstalled--
   5. Hiawatha: --unused--
   6. Nginx: --uninstalled--
   7. Cache: --uninstalled--
   8. Dns: bind-9.9.7-1.mr.el6.x86_64
   9. Qmail: qmail-toaster-1.03-1.3.55.mr.el6.x86_64
      - with: courier-imap-toaster-4.1.2-1.3.18.mr.el6.x86_64
D. Memory:
                total       used       free     shared    buffers     cached
   Mem:          3736       3174        562         22        164       1496
   -/+ buffers/cache:       1513       2223
   Swap:            0          0          0
E. Disk Space:
   Filesystem      Size  Used Avail Use% Mounted on
   /dev/vda1        20G  6.4G   13G  35% /


see even free memory is 2223MB

[MRatWork]

Did you select 'medium' or 'high' for 'apache optimize' in 'webserver configure'?.

[tinu]

high . after going through everything.

[MRatWork]

In my experience, httpd24 less stable compare to httpd (aka httpd22).

[tinu]

so what should i do. any suggestions??

[MRatWork]

Try use nginx standalone and then compare them.

[tinu]

Nginx Does the trick. thank you again.

any hope to fix apache?? hiawatha also uses apache its slow too. can you fix apache in future releases??

[MRatWork]

Use apache 2.2 (not apache 2.4; disable 'use httpd24' in 'switch programs') in nginx/hiawatha proxy.