[PATCH v4] app/dma-perf: introduce dma-perf application

[Xia, Chenbo]

> -----Original Message-----
> From: Jiang, Cheng1 <cheng1.jiang at intel.com>
> Sent: Thursday, June 8, 2023 1:03 PM
> To: thomas at monjalon.net; Richardson, Bruce <bruce.richardson at intel.com>;
> mb at smartsharesystems.com; Xia, Chenbo <chenbo.xia at intel.com>
> Cc: dev at dpdk.org; Hu, Jiayu <jiayu.hu at intel.com>; Ding, Xuan
> <xuan.ding at intel.com>; Ma, WenwuX <wenwux.ma at intel.com>; Wang, YuanX
> <yuanx.wang at intel.com>; He, Xingguang <xingguang.he at intel.com>; Jiang,
> Cheng1 <cheng1.jiang at intel.com>
> Subject: [PATCH v4] app/dma-perf: introduce dma-perf application
> 
> 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>
> Acked-by: Morten Brørup <mb at smartsharesystems.com>

Some LONG_LINE warning could be fixed if it's friendly for searching
logs.

I didn't look into all details but overall it seems good.

Acked-by: Chenbo Xia <chenbo.xia at intel.com>

> ---
> v4:
>   fixed inaccuracy of the memory footprint display;
> v3:
>   fixed some typos;
> v2:
>   added lcore/dmadev designation;
>   added error case process;
>   removed worker_threads parameter from config.ini;
>   improved the logs;
>   improved config file;
> 
>  app/meson.build               |   1 +
>  app/test-dma-perf/benchmark.c | 471 ++++++++++++++++++++++++++++
>  app/test-dma-perf/config.ini  |  59 ++++
>  app/test-dma-perf/main.c      | 567 ++++++++++++++++++++++++++++++++++
>  app/test-dma-perf/main.h      |  69 +++++
>  app/test-dma-perf/meson.build |  17 +
>  6 files changed, 1184 insertions(+)
>  create mode 100644 app/test-dma-perf/benchmark.c
>  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
>