[xubuntu-users] Ubuntu 18.04.1 LTS: avahi-daemon uses 60%-100% CPU , fan works heavily

Victor Forberger vforberger at fastmail.fm
Wed Sep 19 13:33:33 UTC 2018

On 09/19/2018 07:24 AM, Yvo Brasseur wrote:
> Hi,
> I am using Xubuntu 18.04.1 on a HP laptop
> HP Notebook - 15-bw005nb (code 1ZL87EA)
> _*uname -a :*_ 
> Linux yvo-hp 4.15.0-34-generic #37-Ubuntu SMP Mon Aug 27 15:21:48 UTC
> 2018 x86_64 x86_64 x86_64 GNU/Linux
> *_cat /etc/*release_*
> I notice that the avahi-daemon spins up to 100% and more at boot time,
> and then slowly
> goes down to a range of 60%-85% over time.
> I did not notice this on version 17.10.
> Is this normal ?  Can this behaviour be influenced ?
> What is the daemon really needed for ?  Can I remove it ?
> (It heats up the processor, and my fan is working overtime ..)
> Brgds,
> Yvo.

Avahi is NOT acting normally on your system.

> The Avahi mDNS/DNS-SD daemon implements Apple's Zeroconf architecture (also known as "Rendezvous" or "Bonjour"). The daemon registers local IP addresses and static services using mDNS/DNS-SD and provides two IPC APIs for local programs to make use of the mDNS record cache the avahi-daemon maintains.

I have it on my computers and have had no problems.

Unless you are networking with computers or printers via zeroconf, you
can probably remove it.

- Victor

Victor Forberger
vforberger at fastmail.fm
blog: http://linuxatty.wordpress.com

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