Re: high %CPU values after upgrading to the last stable kernel

From: Alistair John Strachan
Date: Wed Oct 22 2008 - 21:05:59 EST

On Wednesday 22 October 2008 23:40:54 Ray Lee wrote:
> On Wed, Oct 22, 2008 at 2:04 PM, Frédéric Weisbecker <fweisbec@xxxxxxxxx>
> > 2008/10/22 sbs <gexlie@xxxxxxxxx>:
> >> should i upgrade procps or downgrade kernel then to get proper values
> >> back? :) or is it a feature of the new kernel?
> >>
> >> thank you
> >
> > Hi,
> >
> > It really depends on what your box is doing at the time you capture
> > the cpu usage.
> > And it really depends too of your kernel config...
> It really shouldn't, we're talking about /proc which is supposed to be
> a stable userspace interface.
> Try upgrading your procps, there's a chance it's just so ancient that
> it accidentally got broken. However, if that fixes your problem, then
> please report back with a subject line of "/proc API breakage" or
> somesuch, to get the proper attention to the issue.

This is a known kernel bug that for some reason wasn't fixed before 2.6.27 was
released. See for details.

It would probably be useful if the OP added himself to the CC list, so Peter
can get some more details about the box.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at