Title: CPU usage
Last modified: August 22, 2016

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# CPU usage

 *  [michaeljb](https://wordpress.org/support/users/michaeljb/)
 * (@michaeljb)
 * [11 years, 7 months ago](https://wordpress.org/support/topic/cpu-usage-4/)
 * It seems wordfence is crippling my VPS cpu, so much so that I cannot work on 
   sites. I have been trying to work this out with my hosting company for the past
   few days. We have eliminated several other things like WP heartbeat and even 
   migrated my sites to another server but the cpu load is being hammered. Today
   my sites practically came to a halt and the support agent found that it was wordfence
   that was causing apache traffic. I googled and did some research and found that
   you have told other people to cancel live traffic, did this and it didn’t make
   much difference. The one thing that did work and were we saw a 100% improvement
   in cpu load was when I disabled wordfence on 2 sites. After a few seconds I was
   able to login and work on the sites effectively. I tried restarting wordfence
   and instantly the cpu load shot up. Can you please tell me why this has happened?
   It started 2 or 3 weeks ago and I seem to remember updating the wordfence plugins.
   If this is the cause then I will have to disable this on all of my sites and 
   cancel all of the pro plugins.
    please advise
 * [https://wordpress.org/plugins/wordfence/](https://wordpress.org/plugins/wordfence/)

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 * 0 replies
 * 1 participant
 * Last reply from: [michaeljb](https://wordpress.org/support/users/michaeljb/)
 * Last activity: [11 years, 7 months ago](https://wordpress.org/support/topic/cpu-usage-4/)
 * Status: not resolved