Hi Eric, I did new test today, and you were right. I had a lot of underrun. Therefore, I increase fusb_nbloccks to 8 and fusb_block_size to 2048. Even with this setting, I got some underruns, but they were not often at all. Here are the new numbers (for the code in trunk): Decimation, Nice, Real_Time, mean [s] 8, 10, no, 0.00058 8, -20, no, 0.00057 8, -20, yes, 0.00058 16, 10, no, 0.00108 16, -20, no, 0.00102 16, -20, yes, 0.00106
Interpret this as a CSV file ;). Nice is the nice value with which the process run. Real_time means if real time scheduling was enabled or not. As you can see, these numbers are way better then the ones I had yesterday. Now, here the result for your updated code: Decimation, Nice, Real_Time, mean [s] 8, 10, no, 0.000635 8, -20, no, 0.000629 8, -20, yes, 0.000627 As you can see, the new code performs worse. I didn't do more than these three tests with your code, because I wanted to see a first result, before I spend more time collecting data. Thomas _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
