[RFC] app/dma-perf: introduce dma-perf application

[Morten Brørup]

> From: Cheng Jiang [mailto:cheng1.jiang at intel.com]
> Sent: Thursday, 15 September 2022 17.48
> 
> There are many high-performance DMA devices supported in DPDK now, and
> these DMA devices can also be integrated into other modules of DPDK as
> accelerators, such as Vhost. Before integrating DMA into applications,
> developers need to know the performance of these DMA devices in various
> scenarios and the performance of CPUs in the same scenario, such as
> different buffer lengths. Only in this way can we know the target
> performance of the application accelerated by using them. This patch
> introduces a high-performance testing tool, which supports comparing
> the
> performance of CPU and DMA in different scenarios automatically with a
> pre-set config file. Memory Copy performance test are supported for
> now.
> 
> Signed-off-by: Cheng Jiang <cheng1.jiang at intel.com>
> Signed-off-by: Jiayu Hu <jiayu.hu at intel.com>
> Signed-off-by: Yuan Wang <yuanx.wang at intel.com>
> ---
>  app/meson.build               |   1 +
>  app/test-dma-perf/benchmark.c | 537 ++++++++++++++++++++++++++++++++++
>  app/test-dma-perf/benchmark.h |  12 +
>  app/test-dma-perf/config.ini  |  61 ++++
>  app/test-dma-perf/main.c      | 399 +++++++++++++++++++++++++
>  app/test-dma-perf/main.h      |  55 ++++
>  app/test-dma-perf/meson.build |  16 +
>  7 files changed, 1081 insertions(+)
>  create mode 100644 app/test-dma-perf/benchmark.c
>  create mode 100644 app/test-dma-perf/benchmark.h
>  create mode 100644 app/test-dma-perf/config.ini
>  create mode 100644 app/test-dma-perf/main.c
>  create mode 100644 app/test-dma-perf/main.h
>  create mode 100644 app/test-dma-perf/meson.build
> 

Excellent, thank you!

Is there any reason for making this a separate application, instead of part of the /app/test/ application?

NB: Someone could have asked the same question about test-compress-dev and similar applications... ;-)

Acked-by: Morten Brørup <mb at smartsharesystems.com>