-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Felix Fietkau a écrit : > While reading the code for calculating the frame duration, i noticed > something odd: It doesn't seem to be taking into account the short > vs long preamble distinction for ERP rates. IMHO this might be causing > issues like this. I've seen similar behaviour a long time ago when testing > iwl3945 against a Broadcom AP with exactly the same throughput drop (500- > 600 kbits/s). > When I analyzed the problem with an extra monitor mode card, I found out > that the throughput drop is caused by a huge number of retransmissions, In the test I've done, there was no retransmission at all (no duplicates). I don't save a capture file, so I cannot tell for sure. What is the code computing frame duration you are referring to? How it could affect the hardware behavior? > and if I remember correctly (I didn't look for this specifically back then), > the retransmissions went down the rate scaling table until they hit the > first non-ERP rate and that one worked on the first try. > > Johannes, does that sound like a probable cause? If so, it should be easy > to fix. > > - Felix > Regards, Benoit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJLFX8OR6EySwP7oIRAp2pAJ0batdz64sh9L82CIKzkmVcLyANygCeOq5q D18DQ/Ko9ggdGn5lmshlMJs= =3efH -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
