[OpenAFS] fileserver process eat CPU
Tue, 10 Sep 2013 10:09:27 -0400
On 9/10/2013 1:57 AM, Jean-Marc Choulet wrote:
> We have a question about the fileserver process. On our server openafs
> (Debian squeeze), the fileserver process eats 80% CPU every 5 seconds.
> No AFS clientis connected to the server
> We restarted our server but it is always the same.
> Any idea ?
The primary consumer of CPU in the fileserver process is the rx listener
thread which must read and process every packet that is received on port
7000/udp regardless of whether or not the packets are AFS related.
This is a single thread and can if presented enough network traffic
consume a full processor core. How many processor cores are on this
system? How much network traffic is there?
In the absence of network traffic a file server process should be
relatively idle. Without client connections there won't be callbacks or
host entries to manage.