[Gllug] cpu percentage increasing

[salsaman]

salsaman wrote:

> salsaman wrote:
>
>> salsaman wrote:
>>
>>> salsaman wrote:
>>>
>>>> Hi all,
>>>> I have a question about a curious thing. I have a desktop system 
>>>> (dual AMD 64) which is basically running one app - a video 
>>>> application. I have it sitting there displaying two video clips, 
>>>> applying and effect an mixing them.
>>>>
>>>> What I see in ps is quite strange. The app starts at about 90% CPU 
>>>> usage, but slowly over time the usage goes up.
>>>> Right now after about 8 hours, the usage is up to 97.6 %. Yet it's 
>>>> just doing the same task over and over.
>>>>
>>>> I've had (and fixed) problems with memory leakage before, but "CPU 
>>>> leakage" is a new one to me ! Is this normal, and if not what could 
>>>> be causing it ?
>>>>
>>>> Gabriel.
>>>>
>>> Here is the first few lines from "top":
>>>
>>> top - 18:40:09 up 10:04,  3 users,  load average: 1.21, 1.16, 1.10
>>> Tasks:  69 total,   3 running,  65 sleeping,   0 stopped,   1 zombie
>>> Cpu(s): 42.3% us,  8.0% sy,  0.0% ni, 49.7% id,  0.0% wa,  0.0% hi,  
>>> 0.0% si
>>> Mem:   1026928k total,  1014852k used,    12076k free,   151696k 
>>> buffers
>>> Swap:  1028120k total,     2568k used,  1025552k free,   688460k cached
>>>
>>>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>>> 27736 foo        16   0  159m  29m  10m R 96.6  2.9 526:04.15 bar
>>> 3062 root       15   0 79636  36m 7108 S  4.0  3.6  20:15.99 X
>>> 27809 foo        17   0 35604 1764 1348 S  0.7  0.2   1:17.95 jackd
>>>
>>> Gabriel.
>>>
>>
>> BTW, it also seems strange to me that so much memory is being used. 
>> The main application "bar" is using around 150M, and X is using 
>> around 200M. The rest of the system amounts to maybe 100M.
>>
>> Can anyone explain these oddities ?
>>
>> Gabriel.
>>
>
> OK, the application seems to have topped out at 97.6 % CPU according 
> to "ps", although "top" now shows it using 99.9% !
> What I am also seeing now is that "top" is showing me the amount of 
> free memory decreasing - it's now under 30MB.
> None of the applications in "ps" seem to be leaking memory. Where is 
> this memory going ?
>
> Gabriel.
>

Further to the last point: "buffers" in top seems to be increasing by 
16K or so each time top refreshes.

Gabriel.

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