PC处理速度UVC数据太低?

大家好！
在CyPress FX3上成功完成了YUV格式数据UVC批量模式的传输，通过打印每秒DMABUF计数，测试了数据传输速度，最大可达200 Mb/s。
ARG:
最大突发大小＝16
DMABUF大小＝16×1024
DMABUF计数＝10
然而，帧速率与理论值相差甚远，我用初次捕获法观察帧速率，当分辨率为2592x1944时，帧速率最高可达10fPS，即PC的实际速度小于100Mb/s。然后，我改变了ARGSTO测试，当DMABUF大小＝6×102时。4，速度约为100Mb/s，分辨率为2592x1944时帧速可达10fPS。即使当DMA BUF大小＝32×1024，DMA BUF计数＝5时，当分辨率为2592x1944时，FrAMATETE仍然是10FPS，但是数据传输速度可以达到250Mb/s。
所以我猜PC机处理UVC数据的速度太低了！也许它受到UVC驱动程序或解码器的限制，或者别的什么东西！
最后，我想通过使用批量流协议来提高速度，但是失败了！（它可以启动多个DMA信道来传输数据，但是速度总是在7Mb/s左右，数据大小总是在1024B），我参考了FX3SDK中的CyfxBulkFipe，我不知道UVC批量模式是否能够支持流协议！能告诉我答案吗？
谢谢！对不起，我的错误和表达不清楚！



     以下为原文
  hello！everybody ！
     I successfully finished  transfering YUV -format data in UVC BULK mode on cypress FX3，I tested the data transfering speed by printing the DMA buf counts per second ，and it almostly  reach to 200MB/S more.
    args：
     max burst size  = 16
    DMA BUF size = 16*1024
    DMA BUF counts = 10
    however，the frame rate is far away from the theoretical value，I watched the frame rate using debut capture，and framerate is at most up to 10fps when the resolution is 2592x1944， namely，the actual speed at PC is less than 100MB/S.  then I changed the args to test，and when DMA BUF size = 6*1024，the speed is about 100MB/S，and framerate can be up to 10fps when the resolution is 2592x1944.  even when the DMA BUF size = 32*1024, DMA BUF counts = 5 ,framerate is still   10fps when the resolution is 2592x1944.  but  the  data transfering speed can be up to 250MB/S .
    so I  guess that the speed of PC processing UVC data is too low!   Maybe it's restricted by UVC driver or decoder or something else!
    at last, I wanna improve the speed by using BULK stream protocol,but it failed ! (it can start the mulitiple DMA channels to transfer datas,but the speed is always about 7MB/S,and the data size every times is always 1024B) I referred the example  cyfxbulkstreams in FX3 SDK, I dont know whether UVC bulk mode can support the stream protocol!  can anyone tell me the answer?
    thx! and sorry for my mistakes and unclear expressiong!