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

[Stefan Priebe - Profihost AG]

Am 10.10.2013 05:33, schrieb 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.

Oh OK i thought for stuff like that we use the /current requests - but
you're  right that's only valid for the guests and not for the overall
stats.

>> 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.

That would be very perfect - but out of my knowledge ;-(

Stefan