[Xen-devel] VIF_metrics = 0

[Stefan de Konink <skinkie@xxxxxxxxx>]

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Hi,


I use the following code snippet based on xapi.py to request the metrics
of the DomU's.

> def request_vif_metrics():
>         server, session = connect()
>         vm_uuids = execute(server, 'VM.get_all', (session,))
> 
>         for uuid in vm_uuids:
>                 vm_info = execute(server, 'VM.get_record', (session, uuid))
>                 vifs = vm_info['VIFs']
>                 read = 0.0;
>                 write = 0.0;
>                 for vif in vifs:
>                         vif_metrics = execute(server, 'VIF.get_metrics', 
> (session, vif))
>                         vif_metrics_struct = execute(server, 
> 'VIF_metrics.get_record', (session, vif_metrics))
>                         print vif_metrics_struct
>                         read += vif_metrics_struct['io_read_kbs']
>                         write += vif_metrics_struct['io_write_kbs']
>                 print '%s: %f %f' % (vm_info['name_label'], read, write)


I would expect to get some numbers higher than 0.0 from the
vif_metrics_struct.


The actual output:

Domain-0: 0.000000 0.000000
{'io_read_kbs': 0.0, 'last_updated': <DateTime '20071117T03:01:10' at
808e60>, 'io_write_kbs': 0.0}
skinkie_gentoo_old: 0.000000 0.000000
{'io_read_kbs': 0.0, 'last_updated': <DateTime '20071117T03:01:10' at
808908>, 'io_write_kbs': 0.0}
gameserver01: 0.000000 0.000000


I'm running Xen-tools 3.1.1, am I running an older version, or is this a
bug?



Stefan
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