[tahoe-lafs-trac-stream] [Tahoe-LAFS] #472: cpu monitor sometimes shows negative numbers

[Tahoe-LAFS]

#472: cpu monitor sometimes shows negative numbers
--------------------------------+------------------------------------
     Reporter:  warner          |      Owner:
         Type:  defect          |     Status:  new
     Priority:  major           |  Milestone:  undecided
    Component:  code-nodeadmin  |    Version:  1.1.0
   Resolution:                  |   Keywords:  statistics reliability
Launchpad Bug:                  |
--------------------------------+------------------------------------

Old description:

> On some of our production machines, the cpu watcher is displaying weird
> numbers: maybe there's a small field that wraps.
>
> {{{
> 'stats': {'cpu_monitor.15min_avg': 0.019444445629178814,
>            'cpu_monitor.1min_avg': 0.0096666806870237352,
>            'cpu_monitor.5min_avg': 0.0070999994301001535,
>            'cpu_monitor.total': -273.11918400000002,
> }}}

New description:

 On some of our production machines, the cpu watcher is displaying weird
 numbers: maybe there's a small field that wraps.

 {{{
 'stats': {'cpu_monitor.15min_avg': 0.019444445629178814,
            'cpu_monitor.1min_avg': 0.0096666806870237352,
            'cpu_monitor.5min_avg': 0.0070999994301001535,
            'cpu_monitor.total': -273.11918400000002,
 }}}

--

Comment (by exarkun):

 This ticket is about operational visibility for operations that are no
 longer operational.

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/472#comment:5>
Tahoe-LAFS <https://Tahoe-LAFS.org>
secure decentralized storage