My default setting in upsmon.conf already have "POLLFREQ 5". (defalut value in upsmon.conf) And my original pollinterval is pollinterval=5. I didn't run nut on VM when I report this issue.
I tried Oleg's solution to set pollinterval=0, it works. But I am afraid any other side effect. 2013/2/21 Kris Jordan <nut...@sagebrushnetworks.com> > Oleg Semyonov wrote, On 2/20/2013 12:39 AM: > > 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<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.html<http://lists.alioth.debian.org/pipermail/nut-upsuser/2013-January/008195.html> >> > > Does the problem persist outside of a VM? > * > pollfreq*=/num/ > > Set polling frequency, in seconds, to reduce the USB data flow. > Between two polling requests, the driver will wait for interrupts > (aka UPS notifications), which are data changes returned by the UPS > by itself. This mechanism allow to avoid or reduce staleness > message, due to the UPS being temporarily overloaded with too much > polling requests. The default value is 30 (in seconds). > > Sounds like NUT supports interrupts with this driver. > > Pollfreq vs. pollinterval, I also wonder what is up with those two options. > > Is that a Microlink Smart-UPS? Perhaps one of its compatibility mode > limitations are no interrupts. > > ______________________________**_________________ > Nut-upsuser mailing list > Nut-upsuser@lists.alioth.**debian.org<Nut-upsuser@lists.alioth.debian.org> > http://lists.alioth.debian.**org/cgi-bin/mailman/listinfo/**nut-upsuser<http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser> > > -- Best regards, Jyun-Wei Huang (黃俊瑋)
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