View your GPU utilization, both for the total activity percent and individual blocks.
Requires root rights or other permissions to /dev/mem.
R600 and up, even Southern Islands should work fine. Works with both the open drivers and AMD Catalyst.
For the amdgpu driver, only the mem path is currently supported - for those cards, this means radeontop won't run on the default Ubuntu kernels that block /dev/mem.
The total GPU utilization is also valid for OpenCL loads; the other blocks are only useful in GL loads.
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