Nut upsuser - Feb 2013 - Detect ups.status on battery seems a little delay

OS: Linux
NUT version: 2.6.1 or 2.6.3 both have this issue
UPS model: APC Smart-UPS 750 (051D/0002) 
Driver: usbhid-ups

Question: 

 I using upsc command to check ups status.
 When UPS is online, status is "OL". 
 But when UPS is offline, status will not change to OB immediately. 
 After test many times. this delay time didn't have any rules. Maybe
immediately or few seconds or few minutes.
 It will cause doing ONBATT action also delayed. 
 Does any method to solve this issue? or have some false range time for users?
 
 I using APC official software on Windows it will detect immediately.
 So I think this is not UPS machine issue.
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> UPS model: APC Smart-UPS 750 (051D/0002) 
> But when UPS is offline, status will not change to OB immediately. 
> After test many times. this delay time didn't have any rules. Maybe
immediately or few seconds or few minutes.
> It will cause doing ONBATT action also delayed. 
I asked exactly the same question on the 29th of January, and got nothing in
reply.
It doesn't seem to be a bike shedding problem, so nobody bothered, including
developers
(about using non-documented and probably non-supported option value).
http://en.wikipedia.org/wiki/Parkinson's_law_of_triviality

Short solution: set pollinterval=0 in driver configuration. It will report
OB/OL immediately
(but with a bit more CPU load).

Full description: see my question here:
http://lists.alioth.debian.org/pipermail/nut-upsuser/2013-January/008195.htm
l

Oleg

http://lists.alioth.debian.org/pipermail/nut-upsuser/2013-January/008195.htm
l

 

Sorry, last ?L? was missing in previous post.

 

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