Hello, I have a question about D3D11_MEMORY、 D3D9_MEMORY 、SYSTEM_MEMORY

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system CPU:Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.19 GHz
SYStem GPU： Intel(R) UHD Graphics 630
I read https://github.com/Intel-Media-SDK/MediaSDK/blob/master/doc/tutorials/mediasdk-tutorials-readme.md
say By moving from system to video memory implicit copies are eliminated, thus improving GPU load and overall performance. CPU utilization should also decrease slightly.

I build sample_encode.exe test D3D11_MEMORY、 D3D9_MEMORY 、SYSTEM_MEMORY difference

I use sample_encode.exe h264 -i 1080.yuv -hw -async 1 -vbr -b 2000 -w 1920 -h 1080 -o out.h264 -sys

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sample_encode.exe h264 -i 1080.yuv -hw -async 1 -vbr -b 2000 -w 1920 -h 1080 -o out.h264 -d3d

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sample_encode.exe h264 -i 1080.yuv -hw -async 1 -vbr -b 2000 -w 1920 -h 1080 -o out.h264 -d3d11

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I find use SYSTEM_MEMORY is performance and GPU 、CPU 、running times fast D3D11_MEMORY、 D3D9_MEMORY

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@dmitryermilov look forward to your reply

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why set default D3D11_MEMORY

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look forward to your reply @nagos @uartie @diablodale @ph0b