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Hi,
I am trying to get all the GPU HW counters displayed by streamline.
I have built the debug build for DDK and for Linux I have enabled the configurations as mentioned in [1].
But I am just able to see the just the Mali core cycle counters and Mali external bus Access for rest of the Mali properties I get no live data. Is there I missing something here ?
Also is there a document which explains the MALI counters ? I mainly interested on GPU usage level (similar to CPU ones)
[1] https://github.com/ARM-software/gator
Cheers,
Prabhakar
We can't do this automatically - the maximum GPU frequency (absolute, or thermally sustainable) is device specific.
If you know this value you can use a custom expression to divide the counter by this frequency to determine a percentage. For example, if you know the top frequency is 1GHz you can compute the percentage as:
Kind regards, Pete
Hi Peter,
Thanks for the quick reply, $MaliGPUCyclesGPUActive is 90 megacycles. What is $ZOOM being referred to above ?
Does the zoom value refer to time frame as show below (1000 mega-cycles) ?
> What is $ZOOM being referred to above ?
Streamline uses a binned data model, where the bin size is the current UI zoom level. Each data point in an expression is the accumulated samples in a single bin. The $ZOOM is a built-in variable that contains the current bin size in seconds, so (1000000000 * $ZOOM) coverts the literal 1GHz constant into the number of cycles expected in the current bin at that frequency. Using $ZOOM like this means that the percentage makes sense, no matter what the UI zoom level is.
HTH, Pete
Sorry to nag so the $ZOOM value is 100ms ?
Yes. The value is in seconds, so will be "0.1" when at the 100ms zoom level, "0.001" when at the 1ms zoom level, etc.