Hi,
The rx_samples_to_file example uses 'dd' to estimate disk throughput. It is not
done correctly. The code below uses /dev/random as the data source. This was
OK for old SATA drives, but for fast NMVE drives the rate is limited by the
random number generator (which maxes out at around 1 GB/s on a modern machine).
Therefore the example incorrectly reports that the disk throughput is too low
if the expected write rate is > 1 GB/s (well within modern drives). I suggest
replacing /dev/random with /dev/zero.
std::string disk_check_proc_str =
"dd if=/dev/random of=" + temp_file.native()
+ " bs=" + std::to_string(samps_per_buff * channel_count *
sample_type_size)
+ " count=100";
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