gst-launch CPU load on arm 9

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gst-launch CPU load on arm 9

stuart68
Hi,

I have been successfully decoding a flac audio file being streamed to an arm 9 processor, OMAPL-138 @ 372MHz, running openembedded Linux. This is using the latest release of OE.

When I look at the CPU load it cycles, it is not steady. It can go as low as 0% right up to 99% CPU load.

I would have expected the load to maintain a steady percentage.

Can anyone offer me some advice? If not to stop this varying load, then what changes can I make to improve the efficiency of the pipeline?

I have tried using queue, but that makes no difference.

My pipeline is as follows:

gst-launch souphttpsrc location=http://<ip address>/<path to flac file> ! decodbin ! alsasink

Thanks in advance,
Stuart
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Re: gst-launch CPU load on arm 9

Stefan Sauer
On 10.08.2010 09:46, stuart68 wrote:

> Hi,
>
> I have been successfully decoding a flac audio file being streamed to an arm
> 9 processor, OMAPL-138 @ 372MHz, running openembedded Linux. This is using
> the latest release of OE.
>
> When I look at the CPU load it cycles, it is not steady. It can go as low as
> 0% right up to 99% CPU load.
>
> I would have expected the load to maintain a steady percentage.
>
> Can anyone offer me some advice? If not to stop this varying load, then what
> changes can I make to improve the efficiency of the pipeline?
>
> I have tried using queue, but that makes no difference.
>
> My pipeline is as follows:
>
> gst-launch souphttpsrc location=http://<ip address>/<path to flac file> !
> decodbin ! alsasink
>
> Thanks in advance,
> Stuart
>
>  
Is the CPU set to a fixed frequency? How are you meassuring the CPU load?

Stefan

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Re: gst-launch CPU load on arm 9

stuart68


On 25 August 2010 23:42, Stefan Kost <[hidden email]> wrote:
On 10.08.2010 09:46, stuart68 wrote:
> Hi,
>
> I have been successfully decoding a flac audio file being streamed to an arm
> 9 processor, OMAPL-138 @ 372MHz, running openembedded Linux. This is using
> the latest release of OE.
>
> When I look at the CPU load it cycles, it is not steady. It can go as low as
> 0% right up to 99% CPU load.
>
> I would have expected the load to maintain a steady percentage.
>
> Can anyone offer me some advice? If not to stop this varying load, then what
> changes can I make to improve the efficiency of the pipeline?
>
> I have tried using queue, but that makes no difference.
>
> My pipeline is as follows:
>
> gst-launch souphttpsrc location=http://<ip address>/<path to flac file> !
> decodbin ! alsasink
>
> Thanks in advance,
> Stuart
>
>
Is the CPU set to a fixed frequency? How are you meassuring the CPU load?

CPU frequency is set to 372MHz with USERSPACE set.

Stuart


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Be part of this innovative community and reach millions of netbook users
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speed time-to-market. Join now, and jumpstart your future.
http://p.sf.net/sfu/intel-atom-d2d
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