CPU Usage

Hi, I am running Wordfence 5.3.6 and it’s using over 30% of the CPU resources.

Here part of the log:

IP.IP:IPX.IP – – [06/Mar/2015:15:51:35 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.0” 200 721 “https://mywebsite.com/wp-admin/admin.php?page=WordfenceActivity” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36”
IP.IP:IPX.IP – – [06/Mar/2015:15:51:38 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.0” 200 721 “https://mywebsite.com/wp-admin/admin.php?page=WordfenceActivity” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36”
IP.IP:IPX.IP – – [06/Mar/2015:15:51:43 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.0” 200 721 “https://mywebsite.com/wp-admin/admin.php?page=WordfenceActivity” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36”
IP.IP:IPX.IP – – [06/Mar/2015:15:51:50 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.0” 200 721 “https://mywebsite.com/wp-admin/admin.php?page=WordfenceActivity” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36”
IP.IP:IPX.IP – – [06/Mar/2015:15:51:53 +0100] “POST /wp-admin/admin-ajax.php HTTP/1.0” 200 721 “https://mywebsite.com/wp-admin/admin.php?page=WordfenceActivity” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36”

It doesn’t look normal.

Has anyone a clue about what’s going on? Which could be the problem?

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