[pve-devel] [PATCH 2/2] dynamically adjust interval based on last runtime

[Dietmar Maurer]

> I get values between 500ms and 5s depending on connection. One of the biggest
> problems seems to be the tasks and ressources list. Both of them have gzip
> compressed 25kb and pve requests them very often.
> 
> Wouldn't it be possible to have something like:
> - get cluster version
> - if cluster version > oldcluster version:
>        get ressources
>    else
>      *do nothing*
> 
> Just requesting a version number would be very fast even on slow connections
> and ExtJS does not need to rerender "old" data.

The problem is that relatively static resource configuration data is mixed with very dynamic
resource status (cpu usage, memory usage). And we call 'get resources' to update the GUI
with actual status information. The GUI does not make much sense without that data.

> Maybe something like this is for the task list also possible like sending the
> newest known task and the server checks whether there are newer ones
> available.

I think we need a solution based on web sockets. The client can make a web socket connection
to the API server, and the server simply push status changes to those sockets.