Hi Ross,
So I just did a very quick test where I read 100000 an ADC snapshot (8192 Bytes) via mmap(boost::iostreams::mapped_file) using std::copy(). This took about 52 seconds which is about 15MB/s or 120Mb/s - Sound to fast???
I have a vague recollection that the local bus is 16-bits at 33MHz (66MB/s), but it could also be 66MHz (132MB/s). You can determine the local bus clock by; a) Review the ROACH board design documents b) Stop at the U-Boot prompt and read the messages (it usually displays all the clock info) c) Probe the localbus clock either using a scope, using chipscope in the FPGA Cheers, Dave
