https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=27078

--- Comment #5 from David Cook <dc...@prosentient.com.au> ---
(In reply to Christian McDonald from comment #0)
> 
> When I disable Starman/Plack on all nodes, the speed of each node doesn't
> change when a single node goes offline.

What do you mean by "the speed of each node"? Is this a reference to the Koha
application specifically? If Starman/Plack is disabled, are you running Koha
using CGI?

I'd be interested to know more about your "node goes offline" scenario. I
assume this is not a graceful process? If you think about it, chances are your
clusters haven't been notified that the node has left the cluster, so they're
going to keep trying to connect to it. That would explain a slowdown.
Gracefully shutting down a process would probably cause a node member to
gracefully leave the cluster and that would explain a lack of a slowdown.

I'd say... profile the application and monitor network traffic during slowdown. 

As a side note: I think it's great that you're trying out this clustered setup!

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