可以对队列进行双重缓冲吗？

您好!
我正在试用FX2LP设备，它连接到FPGA。我生成CCA。24Mb/s数据加载。用流线型程序（C1），它的速度很好，达到30Mb/s，然后我注意到负载是不连贯的，它是突发性的。它取决于包/传输和传输/队列的设置。例如，对于64个PAC/XFER - 64 XFE/KIE，当队列为空时，1～2MS，C程序将其重新填充。端点配置为散装。
问题是，没有额外的RAM连接到FPGA，所以这将是巨大的，如果负载将更加连贯。（不会有1到2毫秒的差距）。
所以我有一个想法，但是我不知道司机是否支持它：
可以对队列进行双重缓冲吗？因此，当第一个为空时，第二个已经开始。这样就不会有任何差距，转会也会顺利。
谢谢你



     以下为原文
  Hi
    I am experimenting with FX2LP device, which is connected to an FPGA. I generate cca. 24MB/s data load. With streamer program (c#) it was great, the speed was excellent >30MB/s. Then I noticed that the load is not coherent, it is bursty. It depends on the settings of packet / transfer and transfer / queue. For example for 64 pac/xfer  -  64 xfer/que  i get 1 - 2ms when the queue is empty and the c# program refills it. The endpoints were configured as Bulk
    The problem is that it is no additional RAM connected to FPGA, so it will be great if the load will be more coherent. (There won’t be the 1 - 2 ms gaps).
    So I had an idea, but I don’t know if it is supported by the driver:
    It is possible to double buffer the queue? So when the first is empty, the second is already started. Then there won’t be any gaps, and the transfer will be smooth.
    Thank you