[rabbitmq-discuss] Mgmt Plugin (2.1.1) feedback

Simon MacMullen simon at rabbitmq.com
Sat Nov 6 11:55:06 GMT 2010

On 06/11/2010 5:40AM, Michael Vierling wrote:
> Overall we really like the new Management Plugin.


> Here are some feature requests:
> - Queue Size (aggregate)
> It would be helpful to display the current, aggregate queue size, i.e.
> the total sum of all queues. This can help an Admin detect when a queue
> is not getting drained. This could be displayed as a single number on
> the /api/overview within the Message Rates row.

Yeah, that sounds fairly useful.

> - RabbitMQ version
> Can System Information display the RabbitMQ version? We added this into
> Alice. It is very helpful when managing a cluster, because sometimes a
> node fails to get upgraded. The version of Erlang can also be useful.

This is already there, albeit obscurely - open the applications pane on 
the overview page and you can see versions of all running applications.

> - Uptime
> Also added to Alice. This is useful to track reliability.

Sounds useful.

> -rabbitmqadmin CLI
> We like it! However, it is missing the ability to display /api/overview.

That's a fair point, but the trouble is it's not very table-like 
(although it's becoming more so...)

> Also would still prefer a key-value pair option.

I think the KV part is not in doubt (as to general usefulness), it's the 
timestamp bit that feels very special-cased.

> -Firefox strangeness
> I've noticed that I can only have one dashboard window open. We have
> about 32 RabbitMQ nodes. Normally I would keep all 32 nodes open, each
> in a separate tab window, in Firefox. But this seems to slow Firefox so
> much that it becomes unusable. At a certain point Firefox needs to be
> killed and after that because of some glitch it is impossible to login
> back into RabbitMQ's dashboard.

Hmm. I'll investigate. Of course, JavaScript should never leak memory, 
but there are some bad GCs out there...

> Great job overall though. The ability to drill down into Channels and
> see individual rates and counts is really nice.

You'll like the upcoming version then; that's extended so you can do the 
same for queues and exchanges, as well as seeing rates at which 
channels, exchanges and queues are talking to each other.

Cheers, Simon

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