CPUs running at 100% (Hardy Heron, Dell XPS M1330)
dreadpiratejeff at gmail.com
Thu Apr 1 18:17:30 UTC 2010
On Thu, Apr 1, 2010 at 13:24, Quin Wills <quin.wills at simugen-global.com> wrote:
> Thanks Jeff and Liam
> Jeff, yup when I ran my DELL hardware test I ran everything from fan tests
> to RAM. So all good there we hope.
> I'm really not seeing any particular process causing the problem, and also
> seem to feel that I can't make a convincing argument for hardware being the
> issue. I suppose my concern is that there's been an update that has somehow
> buggered things up. But surely Canonical/Ubuntu check this on a laptop
> they've agreed LTS on?
> Any other words of wisdom on what next to do?
Well, if you're sure it's not hardware (and I really doubted it in the
first place, I just like to rule out the easy things when things like
this happen) then that only leaves software... ;-)
Now that I think about it, I may have seen something very similar to
what you're seeing, but to be honest, it's been a good while since I
ran Hardy... I did run it for quite a while on a Thinkpad, and
thinking back, every time I ran into a problem like this: inexplicable
CPU load, system freezing, etc, it was almost always due to something
In my case, either Firefox running pages that had java applets, or
java programs (we had a couple that were used for front ends to
databases, ticketing system, etc). Lotus Notes also caused quite a
bit of pain for me too.
The best thing I can tell you at this point is make sure everything is
up to date (I have a feeling it is, going by your responses so far),
and pay a LOT of attention to what you're doing at the time this
Also, maybe something here will give you an idea:
vmstat could be useful, at least it will give you an idea of what
state the CPU is in at any given moment and show idle, system usage
and user-land usage so you can determine if it's a user app or a
system app that's causing the problem.
I'm still thinking it's gotta be something Java related. Despite all
the people (java developers) who swear by the superiority of Java, I
still despise java code for this very reason...
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