[Bug 30557] Re: cpu idle time in /proc/stat wrong

[Julian Yap]

Further testing with the 386 kernel suggests to me that "running the -386 kernel makes everything run ok again. BenC suggests on irc that it's a SMP issue as that's all that's really different between -386 and -686."

I am now running the stock 386 kernel and it is a lot more CPU friendly:
julian at jubuntu:~$ uname -a
Linux jubuntu 2.6.15-21-386 #1 PREEMPT Fri Apr 21 16:43:33 UTC 2006 i686 GNU/Linux

So yes.  I agree, it's a SMP issue.  I have since reverted my /sys/module/processor/parameters/max_cstate to the previous value of 8.

Is there any reason why the 686 kernel is a SMP one?

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cpu idle time in /proc/stat wrong
https://launchpad.net/bugs/30557