[Engine-devel] [vdsm] Proposal VDSM <=> Engine Data Statistics Retrieval Optimization

Itamar Heim iheim at redhat.com
Fri Mar 15 11:06:38 UTC 2013


On 03/07/2013 01:25 PM, Vinzenz Feenstra wrote:
>
>         Often Changed but unused
>
> This data does not seem to be used in the engine at all. It is *not*
> even used in the data warehouse.
>
>     *memoryStats*  = {'swap_out': '0', 'majflt': '0', 'mem_free': '1466884', 'swap_in': '0', 'pageflt': '0', 'mem_total': '2096736', 'mem_unused': '1466884'}
>     *balloonInfo*  = {'balloon_max': 2097152, 'balloon_cur': 2097152}

these were added for better balloon control iirc. so api needs them for 
mom probbaly. not sure if engine needs them or not.

>
>     *disks*  = {'vda': {'readLatency': '0', 'apparentsize': '64424509440', 'writeLatency': '1754496', 	'imageID': '28abb923-7b89-4638-84f8-1700f0b76482', 'flushLatency': '156549',  'readRate': '0.00', 'truesize': '18855059456', 'writeRate': '952.05'}, 'hdc': {'readLatency': '0', 'apparentsize': '0', 'writeLatency': '0', 'flushLatency': '0', 'readRate': '0.00', 'truesize': '0', 'writeRate': '0.00'}}

these i remember we added per request to the system - are you sure they 
are not in the dwh?



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