[Xquartz-dev] 2.3.3_rc4 - cpu goes up to 100% - sampling process

Gene Selkov selkovjr at gmail.com
Fri Dec 26 09:15:29 PST 2008


Sorry Christof, I haven't seen your answer, and I can't find it in the archives.

I would like to remind Jeremy that you posted your screenshots showing
the process status here:

   http://lists.macosforge.org/pipermail/xquartz-dev/2008-December/001824.html

They look exactly as I saw them on my wife's little macbook. When I
first observed this effet, I did not have any existing assumptions,
which could mislead me to think it was X11.bin causing it, while it
wasn't. I was simply curious about the source of heat and noises
resembling the Sea Harrier on take-off, and it was Apple's activity
monitor that showed X11.bin running at 100%, with everything else
essentially being idle.

Now, if the same cannot be confirmed by sampling, my next theory would
be that the kernel lies about the allocation of user/system time, but
at any rate, it seems that the heat is somehow generated in connection
with X11, whether within X11.bin process or not. All I can state about
the behavior I observed is this:

X11 running --> Activity Monitor shows X11.bin at 100% --> the machine
works as a space heater.
X11 killed --> the heat level goes down and the fan stops.
X11 starts --> the heat goes up.
X11 responds to continuous mouse or keyboard action (work in gimp) -->
the heat goes down
user activity in X11 ceases --> the heat goes up and Activity monitor
shows 100% CPU time again.

After a reboot, I cannot reproduce it. Maybe I have changed something
else as well -- that's why asked whether you've got any tips on how to
reproduce it.

--Gene

On Fri, Dec 26, 2008 at 4:30 PM, Christof Wolf <ch.wolf at hfph.mwn.de> wrote:
> Hi Jeremy,
>
>> Is it X11.bin that is using the CPU?  The sample provided in the
>> previous email shows it waiting almost 99% of the time... is it
>> another process that's using up the CPU?  Or am I missing something
>> here...
>
> yes it is X11.bin.
>
> please read my answer to Gene :-)
>
> ciao
> christof
>
>
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