RFsim: don't shell out to improve kernel socket buffer sizes, teach the user instead

A later commit in this series adds performance tuning tips, which includes the call made in RFsim until this commit.
2024-06-03 14:00:41 +02:00
parent 105368a437
commit 6a12784872
2 changed files with 16 additions and 38 deletions
@@ -174,3 +174,18 @@ To successfully establish a connection with such a GEO satellite channel, both g
 # Caveats

 There are issues in power control: txgain/rxgain setting is not supported.
+
+# How to improve performance
+
+Most importantly, note that the RFsimulator is not designed to be as performant
+as possible, nor is it designed to run close to real-time. It might run faster
+or slower than realtime, depending on CPU, and by design, as this allows to
+stop the entire system for inspection, e.g., using a debugger.
+
+In order to improve performance, you can modify the radio parameters of the gNB
+to reduce the amount of transported samples:
+
+- Use option `-E` for three-quarter sampling (also to be done on the UE-side!)
+- Prefer smaller cell bandwidths
+
+A possible, unimplemented optimization would be to compress samples.