[crorc] "Randomize" CRORC channel creation timing

Author: kostorr

src/Crorc/CrorcDmaChannel.cxx

@@ -113,6 +113,11 @@ CrorcDmaChannel::~CrorcDmaChannel()
 
 void CrorcDmaChannel::deviceStartDma()
 {
+  /* This sleep is an effort to reduce PCIe/BAR saturation during the DMA start
+     of different channels, during which lost BAR operations were observed.
+     If initialization of all 5 channels is triggered together, it will proceed in
+     a sequential manner. */
+  std::this_thread::sleep_for(getChannelNumber() * std::chrono::milliseconds(100));
   deviceResetChannel(ResetLevel::Internal);
 
   startDataReceiving();