[Nut-upsuser] Usbhip-ups going wild

Arjen de Korte nut+users at de-korte.org
Thu Jul 30 17:41:58 UTC 2009

Citeren Antoine Gatineau <antoine.gatineau op alcatel-lucent.com>:

> I am facing some serious issues on customer's site.
> I looked around on the web and in the archives but didn't find anything. I
> hope you can help me.
> Here is my configuration :
> OS :RHES 4.7
> NUT : 2.2.0
> NUT-CLIENT : 2.2.0
> Hardware : IBM x3250M2 (dual-core intel E3110)
> Here are the symptoms :
> After some time, the performance of my applications on this server began to
> drop with functional perturbation, so I took a look at the system and found
> that upshid-nut is taking around 15 to 20% of cpu time.
> Uptime is 20 days. And total cpu time used by usbhid-ups is 396 minutes.
> This seems hudge for a driver.
> In tried then to stop nut drivers and the system crashed and reset.

Upgrade to a more recent version.

There have been tons of changes in the usbhid-ups driver since  
nut-2.2.0 was released a little over two years ago. The older versions  
of this driver have serious performance issues (as well as bugs),  
which have been solved since.

See the NEWS file for nut-2.4.1.

Best regards, Arjen
Please keep list traffic on the list

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