[Nut-upsuser] Usbhip-ups going wild

Antoine Gatineau antoine.gatineau at alcatel-lucent.com
Fri Jul 31 13:17:56 UTC 2009


I looked into the NEWS file, as well as in the ChangeLog.
But it says that upshid-ups has received a lot of attention, bugfix and

Is there a bugzilla or so where I could search if my issue is listed or


-----Message d'origine-----
De :
nut-upsuser-bounces+antoine.gatineau=alcatel-lucent.com at lists.alioth.debian.
[mailto:nut-upsuser-bounces+antoine.gatineau=alcatel-lucent.com at lists.alioth
.debian.org] De la part de Arjen de Korte
Envoyé : jeudi 30 juillet 2009 19:42
À : nut-upsuser
Objet : Re: [Nut-upsuser] Usbhip-ups going wild

Citeren Antoine Gatineau <antoine.gatineau at 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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