Gem sucking whole CPU for no visible reason... intermitently WAS Re: [GEM-dev] Re: [PD-dev] oprofile - streamlining Pd/gem patch

[B. Bogart]

Hi Johannes,

So I finally got oprofile to work (FYI its what the AMD Codeanalyst thing
is based one, actually links to) with:

opcontrol --i pd -p library

with the non-striped pd binary.

So here is the results:

CPU: AMD64 processors, speed 2003.16 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit
mask of 0x00 (No unit mask) count 100000
CPU_CLK_UNHALT...|
  samples|      %|
------------------
  4693599 100.000 pd
        CPU_CLK_UNHALT...|
          samples|      %|
        ------------------
          2671578 56.9196 libGLcore.so.1.0.7664
          1129198 24.0583 Gem.pd_linux
           256682  5.4688 libc-2.3.6.so
           247330  5.2695 libfreetype.so.6.3.5
           212402  4.5254 pd
           127621  2.7190 libGL.so.1.0.7664
            38593  0.8222 libX11.so.6.2
             5956  0.1269 zero
             2353  0.0501 libpthread-2.3.6.so
             1093  0.0233 libGLU.so.1.3
              793  0.0169 comport.pd_linux

So clearly its the nvidia driver sucking up all the CPU.

So I downloaded 8756 and I'm going to try that, though I have to recompile
my kernel since I've gone up to gcc 4 since compiling the driver and
kernel, and they both have to match...

So onto kernel compilation...

Johannes, what kernel/nvidia driver/gcc are you using?

I'll be at 2.6.16,gcc4,nvidia 8756 if I get this line of thought to work.

.b.


On Tue, May 16, 2006 1:28 pm, B. Bogart said:
> Hi Chris,
>
> I'm downloading "codeanalyst" TMTMTMTM now.
>
> also googling on why oprofile may not be seeing my gem symbols.. (oprofile
> is also mentioned on the AMD site)
>
> blechmann, help!
>
> ,b,
>
> On Tue, May 16, 2006 12:30 pm, chris clepper said:
>> On 5/16/06, B. Bogart <ben at ekran.org> wrote:
>>>
>>> Hey all,
>>>
>>> we'll I've narrowed down the issue to lots of pix_buffer writing, but I
>>> can't be sure without getting the profiling to work. No matter what I
>>> do
>>> oprofile just shows me pd symbols, not the gem ones.
>>
>>
>> Did you try the AMD profiler?  It is pretty easy to use and profiles all
>> running processes on the machine.  It will even read the source code and
>> point out which lines of code took time in the sample.  The GUI isn't
>> Apple
>> level of slick but it will show useful info.
>> _______________________________________________
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>>
>
>
>