CPU utilization constant ntpd

I'm looking for causes of intermittent spikes in the CPU usage, and I noticed that the ntpd process constantly takes between 16% and 20% of CPU. It's amazing, why a process that should only periodically synchronize the local clock with a reference on the Internet should require so much resources? For example, I type, but he is the most CPU consuming processes, monitoring of activity of monitor.

I have a MacBook Pro, 2011, with a processor i7 and 16 GB of RAM, El Capitan 10.11.2 running.

In fact, I just found a solution: I used a deprecated NTP server, that probably has not been answered.

It is easy to fix: go to system-> Date & time preferences, activate the changes and change the NTP server to one of those proposed (I chose the one Apple in my area). The high utilization of the processor by the NTP has disappeared.

Tags: Notebooks

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