What does "hrtimer: interrupt" mean?

Posted November 24, 2014 35.1k views

I noticed a message on my console today that simply says: “hrtimer: interrupt took 3777162 ns”

Does anyone know what this means? A simple Google search makes me think that this is a harmless message, but I just wanted to double-check. I haven’t done any experiments with my server, so I’m just wondering what triggered it. Thanks for any help.

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2 answers

This message is often found in cases of high CPU usage, and is an interrupt event for your CPU. If you aren’t seeing it often, you should be alright though. If you are seeing it quite a bit, it’s either time to move to a server with more resources, or look into the software you are running on the server to find out if there are any issues that could cause it to hang.

I am seeing the same thing. The load on the server as per the “Graphs” in the droplet UI is pretty low!