Server memory filling by holding F5

[razRDJ]

Hi!

I have a problem with my current installation of DirectAdmin.

I have a clean WordPress running on one of my customers account, but if you are at the front page and hold F5 for about 5 seconds the whole server's memory is filled and no sites are working because i get out of memory in the SSH terminal.

I tried caching with: APC, XCACHE, WP Super Cache etc but none of them worked.

Does somebody knows a solution to fix this issue?

 

[chatwizrd]

How much memory does your server have? What do you have set in php.ini for memory_limit variable

 

[razRDJ]

I have 4 GB of ram, server is almost completely empty and load is always on 0.00 so no high visitors.

; Maximum amount of memory a script may consume (128MB)
; http://php.net/memory-limit
memory_limit = 128M

 

[zEitEr]

You might need to limit connections per second from every single IP with your firewall.