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pollinterval
2013 Jan 29
0
APC SmartUPS 1500 (USB) does not report OL/OB state
...te change reports (but
still showing UPS data values). Yes, I see using upsc that UPS is OL (or OL
CHRG if it was charging) and input voltage 0V. With pollinterval=4 it
reported battery state *sometimes* but could miss the opposite transition,
etc. Was unreliable, in short.
As a last resort, I set pollinerval=0, and wow, it now reports power state
transitions almost instantly and works reliable. Can't say if it will give
me timeouts (24 hours, it still works, but see above, it means nothing yet).
But CPU consumption increased significantly. Before the change this VM
consumed around 7MHz CPU share wh...