Performance problem since updating from 6.0-RELEASE to 6.0-STABLE last friday

[Pierre-Luc Drouin]

Ulrich Spoerlein wrote:

>Pierre-Luc Drouin wrote:
>  
>
>>Last friday I did a cvsup src/buildworld/buildkernel/installkernel/installworld/mergemaster 
>>on my laptop from 6.0-RELEASE to 6.0-STABLE and since the performance of my laptop (Dell 
>>Precision M70 with a Pentium M 2GHz) is not good. It behaves like if the bus was saturated. 
>>I noticed that sound skips when I play a mp3 with xmms and it also skips when I play dvds 
>>(with mplayer, ogle or vlc). I have tried to recompile a kernel with apic disabled since I 
>>had some performance issues with this enabled before 6.0-stable, but it didn't fix 
>>anything. Does somebody have an idea of what change in the FreeBSD sources could be causing 
>>this?
>>    
>>
>
>/me too, and I switched back to 6.0-RELEASE because of that. The problem
>is the smart battery support that was merged shortly after 6.0-RELEASE.
>Running wmbsdbatt the system freezes for 0.5s every 10s or so, this is
>because wmbsdbatt is polling for the battery status. Disabling wmbsdbatt
>everything was back to normal.
>
>This can also be reproduced here with a acpiconf -i loop.
>
>Other sources say, it's the thermal stuff thats blocking the OS, but for
>me it's battery status. (Dell Inspiron 8600c, Pentium-M)
>
>Ulrich Spoerlein
>  
>
Yep, smart battery is definately the problem. The performance of my 
laptop is back to normal when I remove the xfce4-battery-plugin. 
acpiconf -i loop reproduces the problem for me too. So it looks like 
there is something wrong in smart battery.