[Nut-upsuser] USB/UPS connectivity issue on Intel DP55KG Motherboard [DEBUG logs included upsd/upsmon/usbhid-ups]

Arjen de Korte nut+users at de-korte.org
Wed Oct 21 07:14:06 UTC 2009

Citeren Charles Lepple <clepple op gmail.com>:

> could this be a result of setting pollfreq too low?
> http://article.gmane.org/gmane.comp.monitoring.nut.user/5043
> If this is not how pollfreq works, then I stand corrected - but if  
> the device is fully polled once every 30 seconds, and a power outage  
> occurs in that 30-second window, I would think that NUT would get an  
> interrupt report.

In between full polls, we do quick polls every 'pollinterval'  
(default: 2 seconds) to retrieve some info should the UPS not provide  
interrupt reports. Only NUT variables with the HU_FLAG_QUICK_POLL will  
be retrieved then, which typically means that we only need to refresh  
two or three reports (since status bits are usually aggregated in one  
or two reports), which limits the load to the UPS.

Setting the pollfreq to 5 seconds is counter productive here, since  
this will only increase the amount of reports to retrieve (which is  
something some UPS devices can't handle), while the things Justin is  
interested in will already be polled every 2 seconds anyway.

Best regards, Arjen
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